Academic literature on the topic 'Radiative charge transfer'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Radiative charge transfer.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Radiative charge transfer"

1

Ma, Yuhui, Ting-Wing Choi, Sin Hang Cheung, Yuanhang Cheng, Xiuwen Xu, Yue-Min Xie, Ho-Wa Li, et al. "Charge transfer-induced photoluminescence in ZnO nanoparticles." Nanoscale 11, no. 18 (2019): 8736–43. http://dx.doi.org/10.1039/c9nr02020a.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zhao, L. B., J. G. Wang, P. C. Stancil, J. P. Gu, H.-P. Liebermann, R. J. Buenker, and M. Kimura. "Radiative charge transfer in Ne2++ He collisions." Journal of Physics B: Atomic, Molecular and Optical Physics 39, no. 24 (November 29, 2006): 5151–60. http://dx.doi.org/10.1088/0953-4075/39/24/012.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Saito, N., Y. Morishita, I. H. Suzuki, S. D. Stoychev, A. I. Kuleff, L. S. Cederbaum, X. J. Liu, H. Fukuzawa, G. Prümper, and K. Ueda. "Evidence of radiative charge transfer in argon dimers." Chemical Physics Letters 441, no. 1-3 (June 2007): 16–19. http://dx.doi.org/10.1016/j.cplett.2007.04.077.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Babb, James F., and Brendan M. McLaughlin. "Radiative Charge Transfer between the Helium Ion and Argon." Astrophysical Journal 860, no. 2 (June 22, 2018): 151. http://dx.doi.org/10.3847/1538-4357/aac5f4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Zámečníková, Martina, Wolfgang P. Kraemer, and Pavel Soldán. "Radiative Charge Transfer between Metastable Helium and Lithium Cations." Astrophysical Journal 867, no. 2 (November 12, 2018): 157. http://dx.doi.org/10.3847/1538-4357/aae64f.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Babb, James F., and B. M. McLaughlin. "Radiative charge transfer in collisions of C with He+." Journal of Physics B: Atomic, Molecular and Optical Physics 50, no. 4 (January 24, 2017): 044003. http://dx.doi.org/10.1088/1361-6455/aa54f4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zhao, L. B., P. C. Stancil, J. P. Gu, H. ‐P Liebermann, Y. Li, P. Funke, R. J. Buenker, B. Zygelman, M. Kimura, and A. Dalgarno. "Radiative Charge Transfer in Collisions of O with He+." Astrophysical Journal 615, no. 2 (November 10, 2004): 1063–72. http://dx.doi.org/10.1086/424729.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Stancil, P. C., and B. Zygelman. "Radiative Charge Transfer in Collisions of Li with H+." Astrophysical Journal 472, no. 1 (November 20, 1996): 102–7. http://dx.doi.org/10.1086/178044.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Liu, C. H., Y. Z. Qu, J. G. Wang, Y. Li, and R. J. Buenker. "Radiative charge transfer and radiative association of protons colliding with Na at low energies." Physics Letters A 373, no. 41 (October 2009): 3761–63. http://dx.doi.org/10.1016/j.physleta.2009.08.022.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bartram, Ralph H., Lawrence A. Kappers, Douglas S. Hamilton, Alexander Lempicki, Charles Brecher, V. Gaysinskiy, E. E. Ovechkina, and V. V. Nagarkar. "Afterglow Suppression and Non-Radiative Charge-Transfer in CsI:Tl,Sm." IEEE Transactions on Nuclear Science 55, no. 3 (June 2008): 1232–36. http://dx.doi.org/10.1109/tns.2008.922833.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Radiative charge transfer"

1

Yannick, Mercier. "Ab-initio insight into the organic photochemical diversity: non-radiative decay in uracil and derivatives and intramolecular charge transfer mechanisms in the benzonitrile family." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/37341.

Full text
Abstract:
En esta tesis, se ha estudiado dos tipos de reacciones fotoquímicas. Por una parte, se han determinado los mecanismos de reacciones de desactivación no radiativa en la molécula de Uracilo, que forma parte del ARN. Mediante el estudio de derivados del uracilo (5-fluorouracilo y 5- y 6-aminouracilo) se ha podido explicar por qué los derivados presentan estados excitados con tiempos de vida màs largos que el sistema original. También se ha estudiado la fotoquímica de la familia de los aminobenzonitrilos (biciclos, 4F-DMABN y los isomeros del DTABN). Se han determinado los mecanismos de la reacción de transferencia intramolecular de carga, con localización de las especies luminiscentes. Los diferentes derivados han permitido estudiar los efectos estericos y electrónicos y explicar los patrones de fluorescencia diferentes encontrados para los distintos derivados. Los estudios fueron realizados mediante el método CASSCF/CASPT2, con una buena adecuación a los resultados experimentales.
In this thesis, we studied two different types of photochemical reactions. On one hand, we determined non-radiative decay mechanisms for uracil molecule, which is part of the RNA. We then studied some derivatives of uracil (5-fluorouracil and 5- and 6-aminouracil) in order to explain their longer excited states lifetime relative to the parent system. It also allowed us to confirm our initial hypothesis. A second part of our work was about the Intramolecular Charge Transfer (ICT) in the benzonitrile family. Three derivatives of the DMABN have been studied: bicycle systems, 4F-DMABN and DTABN isomers. These systems allowed us to check both electronic and steric effects as well as to explain the mechanisms controlling the potential dual fluorescence and the emitting species. Our studies have been done using the CASSCF/CASPT2 method, with a good agreement with experimental results, which confirms the reliability of this method.
APA, Harvard, Vancouver, ISO, and other styles
2

Manning, Amanda J. L. "Radiative transfer in the middle atmosphere." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279907.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Jaoua, Hend. "Enductions textiles barrières aux rayons IR : élaboration de nouvelles formulations de plastisols PVC." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1070.

Full text
Abstract:
L'objectif de ce projet de recherche est la mise au point et l'utilisation de charges inorganiques barrière aux rayonnements infrarouge pour la préparation de matériaux d'enduction à base de plastisols PVC. Dans un premier temps, cette étude a été consacrée à la caractérisation rhéologique, morphologique et optique de la matrice PVC et à l'élaboration de nouvelles formulations, en incorporant dans le plastisol des charges commerciales de natures chimiques différentes (nacre, billes de verre, alumine, oxyde de Zinc, TiO2 …). Ensuite, des mesures radiatives sur des films de plastisols chargés à différents taux massiques ont été réalisées dans le but de sélectionner les charges présentant les meilleures performances optiques. Enfin, les formulations optimales ont été enduites sur un textile polyester et la stabilité des revêtements soumis à des rayonnements UV a été suivie par plusieurs techniques analytiques. Diverses caractérisations mécaniques, esthétiques et morphologiques sont venues compléter cette étude. Dans un second temps, un modèle de transfert radiatif permettant de simuler la propagation du rayonnement dans les systèmes de protection développés a été testé
This project aims to develop new filled PVC plastisol composite offering enhanced optical properties. Different types of inorganic fillers were tested and added to the PVC matrix. Rheological, morphological and optical characterization of the PVC matrix and development of new formulations by incorporation of different fillers (nacre, glass beads, alumina, zinc oxide, TiO2 ...) were the subject of the first phase of the project. Then, radiative measurements on plastisol films loaded at different mass ratios were performed in order to select the fillers having the best optical performance. The second phase was dedicated to the validation and the testing of the optimal formulations coated on polyester textile substrate. Different analytic technics were used in order to rank the UV stabilization as a function of the tested formulations. In addition, mechanical, aesthetic and morphological characterizations were used to complete this study. Finally, radiative transfer model was developed to simulate the radiative behavior of the different formulations
APA, Harvard, Vancouver, ISO, and other styles
4

Zilic, Elvis. "Radiation curing and grafting of charge transfer complexes." View thesis, 2008. http://handle.uws.edu.au:8081/1959.7/19385.

Full text
Abstract:
Thesis (Ph.D.)--University of Western Sydney, 2008.
Thesis submitted to the University of Western Sydney, College of Health and Science, School of Natural Sciences, in fulfilment of the requirements for admission to the Doctor of Philosophy. Includes bibliography.
APA, Harvard, Vancouver, ISO, and other styles
5

Petkova, Maya Atanasova. "Cloudy with a chance of starlight : coupling of smoothed particle hydrodynamics and Monte Carlo radiative transfer for the study of ionising stellar feedback." Thesis, University of St Andrews, 2018. http://hdl.handle.net/10023/16557.

Full text
Abstract:
Ionising radiation is present in a variety of astrophysical problems, and it is particularly important for shaping the process of star formation in molecular clouds, containing hot, high-mass stars. In order to account for the effects of ionising radiation within numerical models of star formation, we need to combine a hydrodynamics method with a radiative transfer method and obtain a radiation hydrodynamics scheme (RHD). In this thesis I achieve live radiation hydrodynamics by coupling the Smoothed Particle Hydrodynamics (SPH) code Phantom with the Monte Carlo Radiative Transfer (MCRT) code CMacIonize. Since SPH is particle-based and MCRT is grid-based, I construct an unstructured, Voronoi grid in order to establish a link between the two codes. In areas with large density gradients, a Voronoi grid based purely on the SPH particle positions achieves insufficient resolution, and therefore I propose a novel algorithm for inserting a small number of additional grid cells to improve the local resolution. Furthermore, the MCRT calculations require the knowledge of an average density for each Voronoi cell. To address this, I develop an analytic density mapping from SPH to a Voronoi grid, by deriving an expression for the integrals of a series of kernel functions over the volume of a random polyhedron. Finally, I demonstrate the validity of the live RHD through the benchmark test of D-type expansion of an H II region, where good agreement is shown with the existing literature. The RHD implementation is then used to perform a proof-of-concept simulation of a collapsing cloud, which produces high-mass stars and is subsequently partially ionised by them. The presented code is a valuable tool for future star formation studies, and it can be used for modelling a broad range of additional astronomical problems involving ionising radiation and hydrodynamics.
APA, Harvard, Vancouver, ISO, and other styles
6

Lamy, Kévin. "Projection Climatique du Rayonnement Ultraviolet au cours du 21ème siècle : impact de différents scénarios climatiques." Thesis, La Réunion, 2018. http://www.theses.fr/2018LARE0018/document.

Full text
Abstract:
Suite à la signature du Protocole de Montréal en 1987, la concentration atmosphérique des substances destructrices d’ozone (ODS) est en baisse. La couche d’ozone montre des signes de récupération (Morgenstern et al. 2008a). Toutefois, l’émission des gaz à effet de serre (GHG) est en augmentation et devrait affecter au cours du 21ème siècle la distribution et les niveaux d’ozone dans l’atmosphère terrestre. En particulier, la modélisation du climat futur montre des signes d’accélération de la circulation de Brewer-Dobson transportant l’ozone de l’équateur vers les pôles. L’ozone est un constituant chimique important de l’atmosphère. Bien que nocif dans la troposphère, il est essentiel à la vie sur Terre grâce à sa capacité d’absorption d’une grande partie du rayonnement ultraviolet (UV) provenant du Soleil. Des modifications dans sa variabilité temporelle ou géographique impliqueraient des changements d’intensité du rayonnement UV à la surface de la Terre (Hegglin et al. (2009), Bais et al. (2011)). Le rayonnement UV à la surface affecte toute la biosphère. Les interactions entre rayonnement UV et écosystèmes terrestres et aquatiques sont nombreuses. Ces interactions ont des effets sur les cycles biogéochimiques et engendrent des rétroactions positives et négatives sur le climat (Erickson III et al., 2015a). La capture du CO2 atmosphérique par photosynthèse des plantes terrestres en est un exemple (Zepp et al., 2007a). Dans l’océan la pompe biologique du CO2 par la photosynthèse du phytoplancton est aussi directement affecté par la variabilité du rayonnement UV (Hader et al., 2007a). Pour l’homme le rayonnement UV est nécessaire car il participe à la photosynthèse de la vitamine D (Holick et al., 1980), mais une surexposition à des niveaux d’intensité élevés du rayonnement UV est la cause principale du développement de cancer de la peau (Matsumura and Ananthaswamy, 2004). L’objectif de ce travail de thèse est d’analyser l’évolution possible du rayonnement UV au cours du 21ème siècle, en particulier aux tropiques sud, dans le cadre des modifications climatiques attendues. Une première partie de ce travail consiste à modéliser le rayonnement UV en ciel clair dans les tropiques grâce au modèle TUV (Madronich et al., 1998) et à comparer les résultats aux mesures sols réalisées à la Réunion. Cette première partie permet l’utilisation future du modèle aux tropiques avec un bon niveau de confiance. La sensibilité du modèle de transfert radiatif en fonction de différents paramètres d’entrée est analysée (section efficace d’absorption de l’ozone,spectre extraterrestriel du soleil, ...). Les sorties du modèle sont ensuite validées à partir de mesures UV spectral au sol obtenues grâce à un spectromètre BENTHAM DM300n. Un filtrage ciel-clair des données au sol est opéré à partir de mesures de flux et de l’algorithme de Long and Ackerman (2000). Les projections climatiques des indices UV (Mc Kinlay and Diffey, 1987) sont réalisées par la suite. Pour cela, on utilise les sorties de plusieurs modèles de Chimie-Climat participant à l’exercice d’inter-comparaison CCMI (Chemistry Climate Model Initiative), couplées aux modèle TUV, validé en première partie dans les tropiques. L’exercice CCMI consiste à projeter le climat et la chimie Terrestre jusqu’en 2100 selon différents scénarios. Ces sorties décrivant la chimie et physique de l’atmosphère servent d’entrée au modèle de transfert radiatif, on obtient alors le rayonnement UV jusqu’en 2100 pour différents scénarios. Une première analyse comparative de l’UV obtenue pour quatre scénarios d’émissions (RCP2.6/4./6.0/8.5, Meinshausen et al., 2011) est effectuée. La fin du travail consiste à étudier l’impact des ODS, GHG et aérosols sur l’évolution du rayonnement UV au cours du 21ème siècle, avec un focus particulier sur les tropiques de l’hémisphère sud
Following the 1987 Montreal Protocol, atmospheric concentrations of ozone-depleting substances are decreasing. The ozone layer shows signs of recovery. Nonetheless, greenhouse gases emissions (GHG) are rising et should affect the ozone distribution in the atmosphere. Ozone is an important due to his ability to absorb ultraviolet (UV) radiation. The goal of this work is to analyse the possible evolution of UV radiation through the 21st century, particularly in the tropics, for possible climate modification. The first part of this work is to UV in clear-sky in the tropics with the TUV (Madronich et al., 1998) model and to compare against ground-based observations made on Reunion Island. This validation allows the utilisation of TUV in the tropics with a good confidence level. The sensitivity of the model is analysed for multiple parameters. Modelling output is validated against spectral ground-based measurement. Climate Projection of UVI (Mc Kinlay and Diffey, 1987) are then realized with the use of output from model participating in the CCMI ( Model Initiative) exercise and the TUV model. CCMI output describes the chemistry and physics of the atmosphere through the 21st century for four climate scenarios (RCP2.6/4.5/6.0/8.5), they are used as input for the TUV model in order to obtain UV radiation. ODS, GHG and aerosols impact on UVI evolution is analysed
APA, Harvard, Vancouver, ISO, and other styles
7

Hespel, Laurent. "Etude expérimentale et théorique du transfert radiatif dans les milieux diffusants : détermination expérimentale des proporiétés radiatives aux forts taux de charges." Châtenay-Malabry, Ecole centrale de Paris, 1999. http://www.theses.fr/1999ECAP0621.

Full text
Abstract:
Ce mémoire porte sur l'étude expérimentale et théorique du transfert radiatif dans les milieux diffusants unidimensionnels et en particulier, sur la détermination des propriétés radiatives en régime dépendant (i. E. Aux forts taux de charge). On présente les travaux relatifs au développement d'un outil numérique de résolution de l'équation de transfert radiatif par une méthode d'adding-doubling. Des conditions aux limites originales du problème radiatif permettent la prise en compte des pertes du milieu dans le cas d'interfaces planes et des propriétés de diffusion surfacique modélisées par un code électromagnétique (hypothèse de Rayleigh) dans le cas d'interfaces rugueuses. Le calcul des paramètres radiatifs de milieux hétérogènes charges d'inclusions sphériques est ensuite aborde et l'influence des pertes du milieu sur les paramètres radiatifs (théorie de Fardella) est étudiée et discutée. Une méthode d'identification des paramètres radiatifs dont l'objectif est de déterminer, par optimisation, les propriétés radiatives d'un milieu semi-transparent hétérogène quelconque est ensuite présentée. Étudiée numériquement, la confrontation de cette méthode sur des milieux modèles et sur des milieux réels permet alors de confirmer l'étendue de ses possibilités. On aborde ensuite l'évolution des propriétés radiatives (essentiellement l'extinction) en régime dépendant. Un certain nombre de modèles basés sur une approche de champ moyen ou un formalisme cohérent sont alors présentés puis confrontés aux résultats expérimentaux. Ces comparaisons mettent en avant l'intérêt du modèle de champ moyen de Keller et du formalisme cohérent que nous avons étendu au cas des milieux à pertes. Pour finir, on présente notre approche du couplage incohérent faible entre les diffusions surfacique et volumique au travers d'un exemple d'application et d'une comparaison calcul-mesure. L'approche développée s'est alors avérée satisfaisante pour le régime de couplage étudié.
APA, Harvard, Vancouver, ISO, and other styles
8

Cusack, Stephen. "Development of a radiative transfer parameterisation based on correlated k-distribution theory for use in climate studies." Thesis, Glasgow Caledonian University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320069.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Vargel, Céline. "Caractérisation du manteau neigeux arctique, suivi climatique et télédétection micro-onde." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALU029.

Full text
Abstract:
Les régions de hautes latitudes nord se réchauffent de façon plus intense que sur le reste du globe. Ce phénomène, appelé amplification arctique, est dû en partie à la diminution de l'étendue de glace de mer et de la couverture de neige. Par ses changements de pouvoirs réfléchissant et isolant, la neige, présente 9 mois de l'année, pourrait avoir un effet important sur l'augmentation des températures du sol. Le dégel du pergélisol à travers le carbone ainsi libéré serait susceptible d'avoir un impact important sur le climat futur de l'Arctique. Ce projet de recherche a pour objectif d'améliorer le suivi du couvert nival arctique et des températures du sol. À l'heure actuelle, les modèles détaillés d'évolution du manteau neigeux tels que le modèle Crocus ne parviennent pas à reproduire la physique particulière de la neige arctique ce qui conduit à des incertitudes importantes dans la modélisation des températures du sol. De nouvelles paramétrisations physiques ont été implémentées au sein du modèle Crocus pour améliorer la stratification verticale du manteau neigeux en introduisant les effets de la végétation (neige moins dense en profondeur) et les effets du vent (neige plus dense en surface), ainsi que pour modifier la conductivité thermique de la neige. Ces nouvelles paramétrisations permettent une meilleure représentation des températures du sol sous la neige, validée avec un large jeu de données en Alaska, dans l'Arctique canadien et en Sibérie. Les simulations ainsi réalisées à l'aide du modèle Crocus modifié, piloté par la réanalyse météorologique ERA-Interim sur les 39 dernières années (1979-2018), à l'échelle panarctique, montrent une augmentation significative de la densité de la neige au printemps ainsi que de l'humidité de la neige principalement au printemps et en automne, accompagnée d'une diminution significative de la durée d'enneigement. Ces effets cumulés à l'augmentation des températures de l'air entraînent une augmentation des températures du sol allant jusqu'à +0.89 K par décade pour le mois de juin. De façon à pouvoir améliorer le suivi de l'évolution spatiale et temporelle du couvert nival, l'utilisation de données d'observations satellitaires micro-onde est proposée. À partir de l'analyse d'un jeu de données unique de mesures radiométriques en surface associées à la caractérisation in-situ du manteau neigeux (119 snowpits avec des observations simultanées) en zone arctique et subarctique, une paramétrisation optimale du modèle de transfert radiatif SMRT a été définie. En utilisant une longueur de corrélation exponentielle ajustée comme paramètre de microstructure de la neige dans le modèle électromagnétique Improved Born Approximation (IBA), l'étude montre, par rapport aux autres configurations de modèles testées, de meilleurs résultats avec une erreur moyenne (RMSE) inférieure à 30% des observations pour la neige subarctique et 24% pour la neige arctique. Couplées à Crocus, les températures de brillance simulées sur l'ensemble de l'Arctique sont significativement meilleures avec Crocus modifié qu'avec Crocus standard (38 K d'amélioration de l'erreur en moyenne). Ces résultats ouvrent la voie à l'utilisation de l'assimilation des observations micro-onde satellitaires dans le modèle Crocus à grande échelle afin d'améliorer les simulations de densité de la neige arctique, paramètre clef du manteau neigeux influant sur l'évolution des températures du sol sous la neige
Northern high-latitude regions are warming more intensely than the rest of the world. This phenomenon, called Arctic amplification, is due in part to the decrease in sea ice extent and snow cover. Snow, which is present 9 months of the year, could have a significant effect on the increase in land surface temperatures by changing its reflective and insulating properties. Thawing of permafrost which could release important amount of soil carbone into the atmosphere could have a significant positive feedback on the future climate of the Arctic. The objective of this research project is to improve the monitoring of Arctic snow cover and ground temperatures. Detailed models of snow cover evolution such as the Crocus multi-layered model are unable to reproduce the particular physics of Arctic snow, which leads to significant uncertainties in the modeling of ground temperatures. New physical parameterizations have been implemented within the Crocus model to improve the vertical stratification of the snowpack by introducing vegetation effects (less dense snow at the bottom) and wind effects (denser snow at the surface), as well as to modify the thermal conductivity of snow. These new parameterizations allow a better representation of ground temperatures under the snowpack, validated with a large dataset in Alaska, Canadian Arctic and Siberia. The simulations thus carried out using the modified Crocus model, driven by the ERA-Interim meteorological reanalysis over the last 39 years (1979-2018), at the pan-Arctic scale, show a significant increase in snow density in spring as well as in snow moisture, mainly in spring and fall, accompanied by a significant decrease in the duration of the snow cover. These effects, combined with the increase in air temperature, lead to an increase in ground temperature of up to +0.89 K per decade for the month of June. In order to improve monitoring the spatial and temporal evolution of the snow cover, the use of microwave satellite observation data is proposed. Based on the analysis of a unique dataset of surface radiometric measurements, associated with the in-situ characterization of the snowpit (119 snowpits with simultaneous observations) in the Arctic and sub-Arctic zones, an optimal parameterization of the SMRT model has been defined. The results show that using a fitted exponential correlation length as a snow microstructure parameter in the Improved Born Approximation (IBA) electromagnetic model gives the best results compared to the other model configurations tested, with a mean error (RMSE) of less than 30% of the observations for subarctic snow and 24% for Arctic snow. Coupled with Crocus, the simulated brightness temperatures over the entire Arctic are significantly better with modified Crocus than with standard Crocus (38 K improvement in mean bias). These results pave the way for using the assimilation of satellite microwave observations into the Crocus model to improve simulations of Arctic snow density, a key snowpack parameter influencing the evolution of ground temperatures under the snow
APA, Harvard, Vancouver, ISO, and other styles
10

Kangah, Kouadio Guy Yannick. "Mesure du protoxyde d'azote (N2O) depuis l'espace." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30323/document.

Full text
Abstract:
Cette thèse porte sur la mesure du protoxyde d'azote (N2O) à partir de capteurs spatiaux. Dans un premier temps, nous avons étudié les processus d'émissions et de transport de N2O depuis l'Asie jusqu'au bassin méditerranéen. Pour cette étude, nous avons utilisé des sorties du modèle de chimie-transport LMDz-Or-INCA ansi que des profils de N2O estimés à partir d'observations du capteur spatial TANSO-FTS (Thermal And Near infrared Sensor for carbon Observation Fourier Transform Spectrometer) de la plateforme GOSAT (Greenhouses gases Observing SATellite). Ensuite, nous avons mis en place un système de restitution des profils troposphériques de N2O à partir des mesures du capteur spatial infrarouge IASI (Infrared Atmospheric Sounding Interferometer) des plateformes MetOp. Ce système a ensuite été validé en utilisant les mesures in-situ des campagnes aéroportées HIPPO (High performance Instrumented airborne platform for environmental research Pole-to-Pole Observations). Enfin, nous avons étudié l'apport théorique du capteur IASI-NG (IASI-New Generation) par rapport à IASI pour la mesure du N2O troposphérique
This thesis focuses on the measurement of nitrous oxide (N2O) from space sensors. Firstly, we studied the transport and emission processes of N2O from Asia to the Mediterranean Basin (MB). For this study, we used N2O profiles over the period 2010-2013 retrieved from TANSO-FTS (Thermal And Near infrared Sensor for carbon Observation Fourier Transform Spectrometer) observations onboard the platform GOSAT (Greenhouses gases Observing SATellite) . We also used outputs of the chemistry-transport model LMDz-Or-INCA over the same period. Secondly, we built an algorithm to retrieve N2O profiles using observations from IASI (Infrared Atmospheric Sounding Interferometer) onboard the MetOp platforms. This algorithm was validated by comparing the retrieved profiles with in-situ measurements from HIPPO (High performance Instrumented airborne platform for environmental research Pole-to-Pole Observations) airborne campaigns. Finally, we performed a theoretical intercomparison between IASI-NG (IASI-New Generation) and IASI concerning the tropospheric N2O measurements
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Radiative charge transfer"

1

Oguti, Takasi. Sun-earth energy transfer. [Oslo, Norway]: Norwegian Academy of Science and Letters, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

American Society of Mechanical Engineers. Winter Meeting. Radiation, phase change heat transfer, and thermal systems: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Boston, Massachusetts, December 13-18, 1987. New York, N.Y. (345 E. 47th St., New York 10017): American Society of Mechanical Engineers, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nickel-hydrogen battery state of charge during low rate trickle charging. [Washington, DC: National Aeronautics and Space Administration, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

United States. National Aeronautics and Space Administration., ed. Nickel-hydrogen battery state of charge during low rate trickle charging. [Washington, DC: National Aeronautics and Space Administration, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

United States. National Aeronautics and Space Administration., ed. Nickel-hydrogen battery state of charge during low rate trickle charging. [Washington, DC: National Aeronautics and Space Administration, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Nickel-hydrogen battery state of charge during low rate trickle charging. [Washington, DC: National Aeronautics and Space Administration, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

1958-, Wishart James F., and Nocera Daniel G. 1957-, eds. Photochemistry and radiation chemistry: Complementary methods for the study of electron transfer. Washington, DC: American Chemical Society, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

W, Gerstl S. A., Tornow Carmen, and United States. National Aeronautics and Space Administration., eds. Accurate top of the atmosphere albedo determination from multiple views of the Multi-angle Imaging Spectro-Radiometer (MISR) instrument. [Los Alamos, N.M.]: Los Alamos National Laboratory, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Mounir, Ibrahim, and United States. National Aeronautics and Space Administration., eds. Experimental and computational investigations of phase change thermal energy storage canisters. [Washington, DC]: National Aeronautics and Space Administration, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

1934-, Okiji A., Makoshi K. 1948-, Kasai H. 1952-, and Taniguchi International Symposium on the Theory of Condensed Matter (18th : 1996 : Kashikojima, Japan), eds. Elementary processes in excitations and reactions on solid surfaces: Proceedings of the 18th Taniguchi Symposium, Kashikojima, Japan, January 22-27, 1996. Berlin: Springer, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Radiative charge transfer"

1

Ferreira da Silva, Filipe, Mónica Mendes, Gustavo García, and Paulo Limão-Vieira. "Charge Transfer Processes in Key Biological Systems." In Radiation in Bioanalysis, 329–48. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-28247-9_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Fouquart, Y. "Radiative Transfer in Climate Models." In Physically-Based Modelling and Simulation of Climate and Climatic Change, 223–83. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3041-4_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kasha, Michael. "Energy Transfer, Charge Transfer, and Proton Transfer in Molecular Composite Systems." In Physical and Chemical Mechanisms in Molecular Radiation Biology, 231–55. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-7627-9_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Oikarinen, Liisa. "Monte Carlo Simulations of Radiative Transfer for Limb Scan Measurements." In Chemistry and Radiation Changes in the Ozone Layer, 331–33. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4353-0_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Stamnes, Knut, Børge Hamre, and Jakob J. Stamnes. "Radiative Transfer in the Coupled Atmosphere-Snow-Ice-Ocean (CASIO) System: Review of Modeling Capabilities." In UV Radiation in Global Climate Change, 244–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-03313-1_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Cao, Liang, Xing-Yu Gao, Andrew T. S. Wee, and Dong-Chen Qi. "Quantitative Femtosecond Charge Transfer Dynamics at Organic/Electrode Interfaces Studied by Core-Hole Clock Spectroscopy." In Synchrotron Radiation in Materials Science, 137–78. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527697106.ch5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Miller, John H. "Role of Energy and Charge Transfer in DNA Damage by Densely Ionizing Radiation." In The Early Effects of Radiation on DNA, 157–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-75148-6_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Morsdorf, Felix, Fabian D. Schneider, Carla Gullien, Daniel Kükenbrink, Reik Leiterer, and Michael E. Schaepman. "The Laegeren Site: An Augmented Forest Laboratory." In Remote Sensing of Plant Biodiversity, 83–104. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33157-3_4.

Full text
Abstract:
AbstractGiven the increased pressure on forests and their diversity in the context of global change, new ways of monitoring diversity are needed. Remote sensing has the potential to inform essential biodiversity variables on the global scale, but validation of data and products, particularly in remote areas, is difficult. We show how radiative transfer (RT) models, parameterized with a detailed 3-D forest reconstruction based on laser scanning, can be used to upscale leaf-level information to canopy scale. The simulation approach is compared with actual remote sensing data, showing very good agreement in both the spectral and spatial domains. In addition, we compute a set of physiological and morphological traits from airborne imaging spectroscopy and laser scanning data and show how these traits can be used to estimate the functional richness of a forest at regional scale. The presented RT modeling framework has the potential to prototype and validate future spaceborne observation concepts aimed at informing variables of biodiversity, while the trait-based mapping of diversity could augment in situ networks of diversity, providing effective spatiotemporal gap filling for a comprehensive assessment of changes to diversity.
APA, Harvard, Vancouver, ISO, and other styles
9

Cederquist, H. "Radiative stabilization following transfer of two electrons to Xe q+ (q ≤ 35) in slow collisions with He and Xe." In Atomic Physics of Highly Charged Ions, 99–104. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76658-9_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sá, A. Vaz, M. Azenha, A. S. Guimarães, and J. M. P. Q. Delgado. "Modelling Solar Radiation and Heat Transfer of Phase Change Materials Enhanced Test Cells." In Efficient and Suitable Construction, 135–54. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62829-1_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Radiative charge transfer"

1

Liou, Kuo-Nan. "Radiative transfer and regional climate change." In RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN (IRS2012): Proceedings of the International Radiation Symposium (IRC/IAMAS). AIP, 2013. http://dx.doi.org/10.1063/1.4804701.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Murthy, Sunil, and Andrei Fedorov. "Radiation Heat Transfer Analysis of the Monolith-Type Solid Oxide Fuel Cell." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41796.

Full text
Abstract:
In this study, a modeling framework for heat and mass transport is investigated for a unit cell of the monolith type SOFC, with emphasis on quantifying the radiation heat transfer effects. The Schuster-Schwartzchild two-flux approximation is used for treating thermal radiation transport in the optically thin YSZ electrolyte, and the Rosseland radiative thermal conductivity is used to account for radiation effects in the optically thick Ni-YSZ and LSM electrodes. The thermal radiation heat transfer is coupled to the overall energy conservation equations through the divergence of the local radiative flux. A commercially available CFD software was used as a platform for the global thermal-fluid modeling of the SOFC and the radiation models were implemented through the user-defined functions. Results from sample calculations show significant changes in the operating temperatures and parameters of the SOFC with the inclusion of radiation effects.
APA, Harvard, Vancouver, ISO, and other styles
3

Hall, David J., Andrew Holland, Neil Murray, Jason Gow, and Andrew Clarke. "Modelling charge transfer in a radiation damaged charge coupled device for Euclid." In SPIE Astronomical Telescopes + Instrumentation, edited by Andrew D. Holland and James W. Beletic. SPIE, 2012. http://dx.doi.org/10.1117/12.925394.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hofgren, Henrik, and Bengt Sundén. "Modeling Thermal Radiation With Focus on Particle Radiation in Grate Fired Furnaces Combusting MSW or Biomass: A Parametric Study." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62882.

Full text
Abstract:
This parametric study shows that thermal radiation from particles, fly ash and char, can be highly relevant for estimating the radiative heat flux to surfaces in grate fired furnaces, especially to the hot bed. The large effects of particle radiative heat transfer come from cases with municipal solid waste (MSW) as fuel whereas biomass cases have moderate effect on the overall radiative heat transfer. The parameters investigated in the study were the fuel parameters, representing a variety of particle loads and size distributions, emissivities of walls and bed, and the size of furnace. The investigations were conducted in a 3-D rectangular environment with a fixed temperature field, and homogeneous distribution of gases and particles. The choice of boundary emissivity was found to be much more or equally important as the particle radiation effects, dependent if biomass or MSW, respectively, was used as the fuel. The effect of particle radiation increased with increasing furnace size, mostly evident in the change of the radiative source term and the heat flux to the bed. Compared to previous studies of particle radiation in grate fired combustion, this study used realistic particle mass size distributions for fly ash. Estimates of char mass size distributions inside the furnace were conducted and used.
APA, Harvard, Vancouver, ISO, and other styles
5

Ford, J. Chris, and Comas L. Haynes. "Radiative Heat Transfer Effects on Transient Operation of a Planar Solid Oxide Fuel Cell." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33212.

Full text
Abstract:
A considerable design and operational challenge for solid oxide fuel cells (SOFCs) is the material degradation caused by high temperature (600–1000°C) operation. At such high temperatures, it is reasonable to assume that radiative heat transfer effects may be significant; however, few studies have rigorously investigated the impact of radiative heat transfer on the operation of SOFCs. Accordingly, modeling efforts have been made to characterize the temperature profile evolutions that occur within planar SOFCs during transient operation. Therefore, initial results are presented to elucidate the impact of radiation upon SOFCs during start up, load changes, and shut down.
APA, Harvard, Vancouver, ISO, and other styles
6

Archibold, Antonio Ramos, Muhammad M. Rahman, D. Yogi Goswami, and Elias L. Stefanakos. "High Temperature Latent-Heat Thermal Energy Storage Module With Enhanced Combined Mode Heat Transfer." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38766.

Full text
Abstract:
A numerical solution of the melting problem of a semitransparent gray, medium contained in a closed heated spherical shell is presented in this study. The influence of all the fundamental energy transfer mechanisms on the melting dynamics of the phase change medium (PCM) has been analyzed, in order to extend the convectional natural convection-dominated model and to expand the limited literature in the thermal energy storage (TES) area at high operating temperatures (>800°C). A two-dimensional, axisymmetric, transient model has been solved numerically. The discrete ordinate method was used to solve the equation of radiative transfer and the finite volume scheme was used to solve the equations for mass, momentum and energy conservation. The effect of the optical thickness of the medium on the melt fraction rate, total and radiative heat transfer rates at the inner surface of the shell has been analyzed and discussed. Also the influence of thermal radiation has been quantified by performing comparisons between the pure conduction and the simultaneous conduction and radiation models. The results showed that the presence of thermal radiation enhances the melting process, particularly during the solid phase sensible heating process in the multi-mode heat transfer model. Also, it was found that the contribution of the radiant energy exchange is one order of magnitude smaller than the convective transport process.
APA, Harvard, Vancouver, ISO, and other styles
7

Rubtsov, Nikolai A., and Nadezhda A. Savinova. "Numerical investigation of radiative- conductive heat transfer in phase change of a semitransparent medium." In International Heat Transfer Conference 12. Connecticut: Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.5010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rubtsov, Nikolai A., and Nadezhda A. Savinova. "Numerical investigation of radiative-conductive heat transfer in phase change of a semitransparent medium." In International Heat Transfer Conference 12. Connecticut: Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.5280.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wang, Wenping, Peng Sun, Jing Ren, and Hongde Jiang. "Radiative Effectiveness on the Aero- and Thermodynamics in a Highly Thermally Loaded Film Cooling System." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45592.

Full text
Abstract:
With the increasing of the gas turbine inlet temperature, the radiative heat transfer plays a more important role in the total heat transfer. In this paper, a high temperature test rig has been built to research the radiative effect in high temperature film cooling. The test section is made up of a high temperature hot gas channel and a middle temperature coolant air channel which are separated by a flat plate with a row of film cooling holes. The goal is to analyze the effects of radiation and its interaction between conduction and convection in the internal and film cooling which consider the heat transfer in both gas and solid. Meanwhile, the numerical study on the test cases are also carried out by combining conjugate heat transfer with radiative models. The fluid and solid regions were solved simultaneously. The Discrete Ordinates (DO) model and the Weighted Sum of Gray Gases Model (WSGGM) has been used to solve the radiative transfer equation for the radiation modeling. The results show that the temperature of the plate increase greatly when the radiation is taken into account and the temperature gradient through the plate becomes much larger. The temperature distribution has been changed and become smoother in spanwise direction. The results also indicate that the internal emissivity of the inlet has an influence mainly on the whole temperature of the plate, which suggests that the control of inlet emissivity is a good way for prevent over-high temperature on the first stage gas turbine vane.
APA, Harvard, Vancouver, ISO, and other styles
10

Jaworski, Maciej, Ryszard Wnuk, Małgorzata Cieślak, and Bogna Goetzendorf-Grabowska. "Experimental Investigation and Mathematical Modelling of Thermal Performance Characteristics of Textiles Incorporating Phase Change Materials (PCMs)." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.260.

Full text
Abstract:
Impregnation of textiles (fabrics) by phase change materials (PCMs) changes their thermal properties. High thermal capacity of PCMs, due to large enthalpy of phase change (latent heat), increases the potential of these materials for heat accumulation, but also modifies heat transfer in transient states what improves their insulating characteristics. The paper presents selected results of both experimental and theoretical investigation of the thermal behavior of textiles impregnated with phase change materials, PCMs, under variable thermal loads. Thermal capacity of textiles containing different amounts of microencapsulated PCM were measured with DSC. Then, their thermal behavior characteristics were investigated under irradiation from a solar simulator (heating phase) and during cooling in the regime of natural convection. Mathematical model of heat transfer in the textiles, including radiative and convective boundary conditions, was formulated. Computer simulations of the processes under study, validated on the base of experimental results, allowed to determine important properties of the textiles, such as coefficients of absorption and transmission for solar radiation. Overall thermal characteristics of the textiles, i.e. temperature variations under different thermal loads, are also presented in the paper.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography