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Dissertations / Theses on the topic 'Photolon'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Lillich, Joachim. "Untersuchung der Produktion prompter Photonen und neutraler Pionen in der Photon-Photon-Streuung mit dem OPAL-Experiment." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=970692706.

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2

Ramage, Marie-Joëlle. "Formation, fragmentation et fluorescence des ions diatomiques doublement chargés." Paris 11, 1987. http://www.theses.fr/1987PA112224.

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Les résultats exposés dans cette thèse constituent les premières données expérimentales que l'on possède sur les ions diatomiques doublement chargés produits par double photoionisation. Les expériences décrites ont été réalisées en utilisant le rayonnement synchrotron d'ACO photons dans la région d'énergie 35-140 ev. La première partie est consacrée à l'étude des molécules d’hydrogène et de deutérium. La section efficace de double photoionisation par la méthode de coïncidences photoion-photoion (PIPICO) énergies de photons s'étendant du seuil de double photoionisation (environ 50 eV) jusqu'à 1
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3

Winkoun, Dominique. "Étude par coïncidences photoion-photoion de la formation et la dissociation d'ions moléculaires doublement chargés." Paris 11, 1986. http://www.theses.fr/1986PA112163.

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La méthode PIPICO (photoion-photoion coïncidences) par l’utilisation conjointe du rayonnement synchrotron pour la formation d’ions moléculaires et des techniques de coïncidences ion-ion pour l’analyse des paramètres de la dissociation a permis de déterminer les énergies des états électroniques dissociatifs (ou rapidement prédissociés) d’ions moléculaires doublement chargés, et de mesurer les sections efficaces partielles de formation de ces états. L’identification des différentes voies de fragmentation de ces espèces doublement chargées et la mesure de l’énergie cinétique des fragments a permi
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4

Thomsen, Katharina. "Zwei-Photonen-Endomikroskopie." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-183409.

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In der vorliegenden Arbeit wurden die Grundlagen für die Zwei-Photonen-Endomikroskopie untersucht. Die Herausforderung liegt in der Miniaturisierung der Technik der Zwei-Photonen-Mikroskopie, um auch endoskopisch in vivo hochauflösende Bilder von Gewebestrukturen und Zellen zu erhalten. Im Gegensatz zur Gewebeentnahme bei einer Biopsie ist dieses optische Verfahren minimal-invasiv. Damit ist eine Vorab Untersuchung des Gewebes möglich, die die Diagnostik unteranderem von bösartigen Gewebestrukturen präzisieren könnte. Die konfokale Endoskopie bietet bereits mit einem vergleichbaren Verfahren d
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5

Sun, Bo. "Theoretical studies of atom-atom, atom-photon and photon-photon entanglement." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-10272006-091504/.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2007.<br>You Li, Committee Chair ; Citrin David, Committee Member ; Kuzmich Alex, Committee Member ; Fox Ronald, Committee Member ; Chapman Michael, Committee Member.
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6

Scully, Shane William James. "Negative photoion spectroscopy in the extreme ultraviolet." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484323.

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7

Hendry, D. "Jet production in photon-photon interactions." Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375434.

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8

Weston, Luke John Henry. "Signals for supersymmetry in photon photon scattering." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368118.

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9

Legero, Thomas. "Zeitaufgelöste Zwei-Photonen-Interferenz." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974900893.

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10

Antonova, Anastasia, and Hanna Lundin. "Photobot : An Exploring Robot." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264452.

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Sometimes when terrain is inaccessible to humans we use robots to help us explore it. In this project a self navigating robot was created that used ultrasonic sensors to detect obstacles in its path and avoided them. When an obstacle is encountered the robot documents said obstacle by taking photographs of it as well as registered its coordinates and created a map, as a bonus feature. Thereafter the robot continued its path based on where obstacles were absent. By using stepper motors to drive the robots traveled distance was calculated. With this information a map over the traveled path was c
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11

Walker, Ian W. "Exclusive charged pion production in photon-photon interactions." Thesis, Lancaster University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305949.

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12

Nečas, Ondřej. "Photon mapping." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236747.

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This thesis deals with practical implementation of photon mapping algorithm. To achieve better results some basic and some more advanced methods of global illumination has been examined. These time demanding algorithms are often practically unusable and their further optimization is necessary. Optimized ray tracer is essential for practical implementation. Computing diffuse interreflection by Monte Carlo sampling is also very time demanding operation. Therefore it is appropriate to use it along with proper interpolation.
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13

Fitzpatrick, Catherine Rose. "Single-photon metrology with superconducting nanowire single-photon detectors." Thesis, Heriot-Watt University, 2013. http://hdl.handle.net/10399/2633.

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Single-photon sources and detectors underpin the development of quantum photonic technologies. This thesis presents research into single-photon devices with a focus on telecom wavelengths. A two-channel superconducting nanowire single-photon detector (SNSPD) system was constructed and characterised. It provides free-running single-photon detection at telecom wavelengths with low dark counts and timing jitter below 90 ps FWHM. The system detection e ciency at 1310 nm is 1 % with a 1 kHz dark count rate, which was competitive when the SNSPD was built in 2009. In this work, the low timing jitter
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14

Chen, Wenlan Ph D. Massachusetts Institute of Technology. "Strong proton-photon interactions at the single-photon level." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99256.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 137-142).<br>Engineering light at the single photon level is a long-standing goal in physics. In this thesis, we investigate optical nonlinearities at the single photon level orchestrated by an optical cavity. We demonstrate an all-optical transistor where one
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15

Jin, Lijing. "Détection des interactions photon-photon dans un circuit supraconducteur." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY002/document.

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Les circuits quantiques supraconducteurs sont étudiés dans de nombreux laboratoires. Ces recherches ont pour objectif de pouvoir construire et coupler plusieurs bits quantiques supraconducteurs pour le traitement de l'information quantique. La description théorique de ces circuits repose sur la dynamique couplée des différences de phase supraconductrice aux jonctions Josephson et des degrés de liberté associés à l’environnement électromagnétique. Cette dynamique non-linéaire a été très étudiée dans le régime classique. Les effets quantiques ont été abordés par des théories de perturbation supp
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16

KAPUSTA, FREDERIC. "La projection de jets dans les collisions photon photon." Paris 6, 1989. http://www.theses.fr/1989PA066754.

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L'etude des hadrons produits a grande impulsion transverse dans les collisions de photons quasi reels est ideale pour tester les predictions de la chromodynamique quantique (qcd). Le simple couplage ponctuel du photon aux quarks implique la production de jets analogues a ceux observes pour la premiere fois en annihilation #+# a spear. Cette these met en evidence la presence de processus de diffusion dure dans les collisions photon-photon, a des energies, dans le centre de masse de l'ordre de celles de spear dans le centre de masse e#+e#, mais dans des conditions de bruit de fond nettement moin
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17

Downie, Peter. "Photoionization of oriented molecules : angle resolved photoelectron photoion coincidence." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243490.

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18

Rein, Benjamin. "Drei-Photonen Kohärenzeffekte in Quecksilberdampf." Phd thesis, Technische Universität Darmstadt, 2016. https://tuprints.ulb.tu-darmstadt.de/5862/1/Dissertation_Rein.pdf.

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Die Entwicklung kontinuierlich strahlender UV- und VUV-Laser ist ein aktives Forschungsfeld, da viele Anwendungen sowohl im industriellen Bereich wie auch im Grundlagenforschungsbereich von einer solchen Laserquelle profitieren können. Konventionelle Lasersysteme, basierend auf einer Besetzungsinversion in einem aktiven Medium kommen hier jedoch schnell an ihre Grenzen, da die für eine Besetzungsinversion notwendige Pumpleistung mit der Laserfrequenz ω^4 ansteigt. Auch Methoden wie die Frequenzverdopplung oder das vier-Wellen Mischen weisen Limitierungen bei der Erzeugung kurzer Wellenlängen a
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19

Van, De Walle Matthias. "Continuous photoflow for macromolecular design." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/208293/1/Matthias_Van%20De%20Walle_Thesis.pdf.

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The current thesis critically advances the synthesis of precision macromolecular structures via photochemical approaches. The work examines the use of continuous photoflow setups to facilitate scalable synthesis of various polymeric architectures, and helps to overcome limitations that hinder photochemistry to be incorporated more frequently into industrial processes. This thesis demonstrates the flexibility and versatility of continuous photoflow and its potential to be developed further, to exceed currently existing photochemical procedures based on traditional batch approaches.
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20

Schwille, Petra. "Zwei-Photonen-Kreuzkorrelations-Spektroskopie : Nachweis der Interaktionen einzelner Moleküle in der lebenden Zelle." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1188552284775-41077.

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The progress of miniaturisation towards the nanoscopic scale in science and technology has also influenced the biosciences. This is particularly important, since proteins, as the smallest functional units of life, exhibit a spectacular wealth of functionalities, enabling them to fulfil complex tasks in cells and organisms. For this reason, they are often termed molecular or cellular “machines”. To be able to investigate and better understand these fascinating molecules in their native environment, new analytical methods must be developed, with appropriately high sensitivity and spatial and tem
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21

Horns, Dieter. "Suche nach TeV-Photonen aus intergalaktischen Kaskaden und nach Bose-Einstein-Kondensaten in TeV-Photonen /." Hamburg : Dissertation.de, 2001. http://catalogue.bnf.fr/ark:/12148/cb399656128.

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22

Yedelkina, Yelyzaveta. "Vector-quarkonium production in photon-photon and photon-proton collisions up to one loop in quantum chromodynamics." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP077.

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Cette thèse se concentre sur l'une des particules les plus étudiées dans les collisionneurs à haute énergie, le quarkonium, qui est un état lié d'une paire de quarks et d'antiquarks lourds.Le partie I commence par une revue des principales caractéristiques de la théorie de l'interaction forte, appelée QCD, et discute le cadre de travail de la QCD Non-Relativiste (NRQCD) pour le calcul des sections efficaces de production et de désintégration du quarkonium, en se restreignant à l'état de Fock principal de la paire quark-antiquark, comme dans le Modèle Couleur-Singlet (CSM). Nous présentons ensu
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23

McKigney, Edward Allen. "An investigation of singly and doubly tagged photon-photon scattering." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300114.

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24

Thompson, Ruth Marie. "Single photon and photon pair emission from a quantum dot." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619579.

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25

Natarajan, Chandra Mouli. "Superconducting nanowire single-photon detectors for advanced photon-counting applications." Thesis, Heriot-Watt University, 2011. http://hdl.handle.net/10399/2432.

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The ability to detect infrared photons is increasingly important in many elds of scienti c endeavour, including astronomy, the life sciences and quantum information science. Improvements in detector performance are urgently required. The Superconducting Nanowire Single-Photon Detector (SNSPD/SSPD) is an emerging single-photon detector technology o ering broadband sensitivity, negligible dark counts and picosecond timing resolution. SNSPDs have the potential to outperform conventional semiconductor-based photon-counting technologies, provided the di culties of low temperature operation can be o
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26

Forshaw, Jeffrey R. "The Parton content of the photon and photon-induced minijets." Thesis, University of Manchester, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.679960.

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27

Giesz, Valérian. "Cavity-enhanced Photon-Photon Interactions With Bright Quantum Dot Sources." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS188/document.

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Dans le domaine de l’information quantique, les photons apparaissent comme de parfaits bits quantiques (qubits) pour le transport de l’information d’un point à un autre. Ce besoin de photons uniques sur demande, où un et un seul photon est émis avec une bonne fiabilité, conduit à une recherche considérable dans le développement de sources de photons efficace. Un paramètre clé est la brillance, défini comme la probabilité qu’un photon émis par l’émetteur soit collecté. Pour certaines applications, il est également important que tous les photons émis soient tous identiques. On dit alors qu’ils s
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28

Volz, Jürgen. "Atom-Photon Entanglement." Diss., lmu, 2006. http://nbn-resolving.de/urn:nbn:de:bvb:19-56356.

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29

Wieczorek, Witlef. "Multi-Photon Entanglement." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-110383.

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30

Wohnhaas, Christian [Verfasser]. "Photonen-Aufkonversion in Nanokapseln / Christian Wohnhaas." Mainz : Universitätsbibliothek Mainz, 2013. http://d-nb.info/1037853245/34.

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31

Doucet, Mathieu. "Étude des corrélations azimutales dans les collisions photon-photon au LEP." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/NQ40504.pdf.

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32

Reinhard, Andreas [Verfasser]. "Strong Photon-Photon Interactions in Solid State Cavity QED / Andreas Reinhard." München : Verlag Dr. Hut, 2013. http://d-nb.info/1034003194/34.

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33

Rumbley, Sarah (Sarah E. ). "Photon-efficient computational imaging with single-photon avalanche diode (SPAD) arrays." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/106005.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 77-78).<br>Single-photon avalanche diodes (SPADs) are highly sensitive photodetectors that enable LIDAR imaging at extremely low photon flux levels. While conventional image formation methods require hundreds or thousands of
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34

Ong, Saro. "Divers aspects des collisions photon-photon : corrections radiatives, et corrélations azimutales." Paris 6, 1988. http://www.theses.fr/1988PA066450.

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35

Ong, Saro. "Divers aspects des collisions photon-photon corrections radiatives et corrélations azimutales /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37617034k.

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36

Neri, Lorenzo. "Time Resolved Single Photon Imaging Device with Single Photon Avalanche Diode." Thesis, Università degli Studi di Catania, 2011. http://hdl.handle.net/10761/183.

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We have studied a new optical sensor characterized by performances that will extend the capabilities of several new physical investigation techniques. Our imaging device is based on a two-dimensional array of Single Photon Avalanche Diode (SPAD), sensitive to the single photon with a subnanosecond timing precision. It is able to perform a continuous photon acquisition without the necessity to break to perform the readout process. Moreover it is not damageable by intense light sources. The proposed solution constitutes a step forward for all Time Correlated Single Photon Counting analysis, as F
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37

Hess, Johannes. "Measurement of the hadronic photon structure function F2[gamma](x, Q2) [F gamma 2 (x, Q 2)] in two-photon collisions." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=967239400.

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38

Ngac, An Bang. "Measurement of the charm production in [gamma][gamma] [gammagamma] interactions at LEP." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=967584264.

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39

Sobol, Andrei E. "A study of the centrally produced nπ° and nπ¯ systems in pp interactions". Chambéry, 2001. http://www.theses.fr/2001CHAMS024.

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40

Beck, Kristin M. (Kristin Marie). "A photon-photon interface with an atomic ensemble in an optical cavity." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104501.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 133-140).<br>Since the emergence of quantum computing as a field, interactions between two-level systems that can carry quantum information have been conceptualized in terms of quantum devices. Here, I demonstrate four such devices for optical photons traveling in two different modes: an all-optical switch and transistor, a nondestructive photon detector, a phase shifter, and a quantum state generator. These devices rely on a
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41

Pisanello, Ferruccio. "Single photon sources based on colloidal nanocrystals and two photon polariton laser." Paris 6, 2011. http://www.theses.fr/2011PA066675.

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Ce travail est consacré à l’étude de plusieurs types de systèmes confinés pour les électrons et/ou les photons. En particulier : (i) un nouveau type de nanocristaux semi- conducteurs est étudié pour obtenir une source efficace de photons uniques à température ambiante dans le domaine spectral du visible ; (ii) leur couplage avec des cavités à cristaux photoniques en nitrure de silicium est obtenu par plusieurs techniques de déposition. (iii) Enfin, le développement d’une technique d’excitation à deux photons pour les polaritons dans les microcavité semiconductrices est décrit dans la dernière
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42

Deinert, Sascha [Verfasser], and Markus [Akademischer Betreuer] Drescher. "Aufbau eines hocheffizienten Photoelektron-Photoion-Koinzidenzexperiments / Sascha Deinert. Betreuer: Markus Drescher." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2013. http://d-nb.info/1036729281/34.

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43

Garcia-Macias, Gustavo Adolfo. "Molecular photoionisation using synchrotron radiation : photoelectron photoion coincidence and circular dichroism." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251988.

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44

Simpson, Matthew James. "Ion-molecule reaction mass spectrometry and vacuum-ultraviolet negative photoion spectroscopy." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1056/.

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Two separate experimental techniques have been used to investigate the fundamental properties of small polyatomic molecules in the gas phase. Selected ion flow tube mass spectrometry has been used to study the reactions of cations and anions with ethene, monofluoroethene, 1,1-difluoroethene, trifluoroethene and tetrafluoroethene. Calculated collisional reaction rate coefficients are compared to those measured by the experiment. The product ions from these reactions have been detected and their branching ratios measured. Many of these results have been explained using arrow-pushing mechanisms.
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45

Weidner, aPeter. "ELEPHANT AND ANCHORS ‒ PHOTOELECTRON PHOTOION COINCIDENCE SPECTROSCOPY OF SMALL OXYGENATED MOLECULES." Scholarly Commons, 2020. https://scholarlycommons.pacific.edu/uop_etds/3724.

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The dissociative photoionization reactions of two small, oxygenated organics, namely 1,3-dioxolane and methyl vinyl ketone, were studied by photoelectron photoion coincidence (PEPICO) spectroscopy. Experiments involving 1,3-dioxolane were carried out in the photon energy range of 9.5‒13.5 eV. The statistical thermodynamics model shows that a total of six dissociation channels are involved in the formation of three fragment ions, namely C3H5O2+ (m/z 73), C2H5O+ (m/z 45) and C2H4O+ (m/z 44), with two channels contributing to the formation of each. By comparing the results of ab initio quantum
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46

Borkar, Sampada N. "Very accurate gas-phase thermochemistry through photoelectron photoion coincidence (PEPICO) spectroscopy." Scholarly Commons, 2013. https://scholarlycommons.pacific.edu/uop_etds/144.

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Five projects are presented here that use Photoelectron Photoion Coincidence (PEPICO) Spectroscopy to determine high-accuracy thermochemical data on small and intermediate size molecules and radicals that are relevant in modeling combustion and atmospheric processes. Some of the experiments were carried out on the laboratory-based Threshold PEPICO (TPEPICO) apparatus which has the advantage of having a low-temperature inlet system and unlimited measurement time, while most of the projects involved the use of the Imaging PEPICO (iPEPICO) apparatus at the Swiss Light Source, which is capable to
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47

Light, Brandon W. "Energy-efficient photon mapping." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-051007-092224/.

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Thesis (M.S.) -- Worcester Polytechnic Institute.<br>Keywords: mobile devices; photon mapping; global illumination; ray tracing; energy; mobile; computer graphics. Includes bibliographical references (leaves 66-68).
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48

Galacz, Roman. "Photon tracing na GPU." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236175.

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Subject of this thesis is acceleration of the photon mapping method on a graphic card. The photon mapping is a method for computing almost realistic global illumination of the scene. The computation itself is relatively time-consuming, so the acceleration of it is a hot issue in the field of computer graphics. The photon mapping is described in detail from photon tracing to rendering of the scene. The thesis is then focused on spatial subdivision structures, especially to the uniform grid. The design and the implementation of the application computing the photon mapping on GPU, which is achiev
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49

Gemmell, Nathan Robert. "Infrared single photon sensing." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/2981.

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50

Wang, Jing. "Two-photon Induced Photochemistry." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/195094.

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Two-photon absorption is the process in which a molecule absorbs two photons simultaneously. The two key advantages of two-photon processes over one-photon processes are the possibility of excitation of materials with high three-dimensional spatial resolution and deep light-penetration into absorbing materials. Based on bond-cleavage reactions activated by photon-induced intramolecular electron transfer, two-photon activatable acid and radical initiators and two-photon removable protecting groups have been successfully designed and synthesized for photopolymerization and three-dimensional micr
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