Relevant bibliographies by topics / Intensité relativiste

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Intensité relativiste'

Author: Grafiati
Published: 1 June 2024
Last updated: 31 July 2025

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Journal articles on the topic "Intensité relativiste"

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Kibande, Wellingtone, Joseph Akeyo Omolo, and Dismas Wamalwa Simiyu. "Gravitation in Flat Euclidean Spacetime Frame: Unified Electrogravity and Magnetogravity Forces." European Journal of Applied Physics 6, no. 4 (2024): 1–7. http://dx.doi.org/10.24018/ejphysics.2024.6.4.334.

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An effective description of physics requires an appropriate geometrical frame. Three-dimensional Euclidean space provides the geometrical frame for non-relativistic physics. A derivation of an imaginary temporal axis −icˆq the speed, ˆq the unit wave-vector of light, extends the standard Euclidean space into a well-defined four-dimensional Euclidean spacetime frame, which provides the natural mathematical framework for relativistic physics. The basic elements of the Euclidean spacetime frame are fully specified four-component complex vectors satisfying standard vector operations and vector ide
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Jiménez-Rosales, A., J. Dexter, S. M. Ressler, et al. "Relative depolarization of the black hole photon ring in GRMHD models of Sgr A* and M87*." Monthly Notices of the Royal Astronomical Society 503, no. 3 (2021): 4563–75. http://dx.doi.org/10.1093/mnras/stab784.

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ABSTRACT Using general relativistic magnetohydrodynamic simulations of accreting black holes, we show that a suitable subtraction of the linear polarization per pixel from total intensity images can enhance the photon ring feature. We find that the photon ring is typically a factor of ≃2 less polarized than the rest of the image. This is due to a combination of plasma and general relativistic effects, as well as magnetic turbulence. When there are no other persistently depolarized image features, adding the subtracted residuals over time results in a sharp image of the photon ring. We show tha
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Lavenda, B. H. "Is Relativistic Quantum Mechanics Compatible with Special Relativity?" Zeitschrift für Naturforschung A 56, no. 5 (2001): 347–65. http://dx.doi.org/10.1515/zna-2001-0503.

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Abstract The transformation from a time-dependent random walk to quantum mechanics converts a modi­fied Bessel function into an ordinary one together with a phase factor e,ir/2 for each time the electron flips both direction and handedness. Causality requires the argument to be greater than the order of the Bessel function. Assuming equal probabilities for jumps ± 1 , the normalized modified Bessel function of an imaginary argument is the solution of the finite difference differential Schrödinger equation whereas the same function of a real argument satisfies the diffusion equation. In the non
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Клименко, Владимир, and Vladimir Klimenko. "Sky-distribution of intensity of synchrotron radio emission of relativistic electrons trapped in Earth’s magnetic field." Solar-Terrestrial Physics 3, no. 4 (2017): 32–43. http://dx.doi.org/10.12737/stp-34201704.

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This paper presents the calculations of synchrotron radio emission intensity from Van Allen belts with Gaussian space distribution of electron density across L-shells of a dipole magnetic field, and with Maxwell’s relativistic electron energy distribution. The results of these calculations come to a good agreement with measurements of the synchrotron emission intensity of the artificial radiation belt’s electrons during the Starfish nuclear test. We have obtained two-dimensional distributions of radio brightness in azimuth — zenith angle coordinates for an observer on Earth’s surface. The west
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Chang, Yifan, Chang Wang, Yubo Wang, Zhaonan Long, Zirui Zeng та Youwei Tian. "Collimation and monochromaticity of γ-rays generated by high-energy electron colliding with tightly focused circularly polarized laser with varied intensities". Laser Physics Letters 19, № 6 (2022): 065301. http://dx.doi.org/10.1088/1612-202x/ac6614.

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Abstract The collision of high-energy electron and laser pulses produces nonlinear inverse Thomson scattering, which can generate γ-rays. We study the effect of laser intensity on the energy angular distribution and spectrum of γ-ray radiation in tightly focused pulses. The γ-rays at non-relativistic intensity have good collimation and monochromaticity, and the radiation energy increases with the laser intensity. The ‘jumping point’ phenomenon of radiation energy variation under relativistic intensity and the ‘black hole’ of energy angular distribution were discovered. As the laser intensity i
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Liesfeld, Ben, Jens Bernhardt, Kay-Uwe Amthor, Heinrich Schwoerer, and Roland Sauerbrey. "Single-shot autocorrelation at relativistic intensity." Applied Physics Letters 86, no. 16 (2005): 161107. http://dx.doi.org/10.1063/1.1905779.

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Walker, B. C., E. C. Jones, Z. Andreula, M. R. Gale, M. Pham, and J. Wisely. "The Role of Polarization for Bound States in Strong Fields." Journal of Physics: Conference Series 2894, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2894/1/012007.

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Abstract As atomic matter interacts with ultrastrong fields, the bound electrons are polarized and have ionization energies changed by Stark-shifting. The unprecedented range of laser intensities from 1015 W cm−2 to 1024 W cm−2 can take the interaction from the neutral atom to a bare nucleus. We have used an outer, single active electron approximation to calculate the polarization and Stark-shifted binding energy for ultraintense lasers interacting with highly charged ions at intensities from 1014 W cm−2 to 1022 W cm−2. The polarization of the bound state can result in a dipole moment and Star
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Friou, A., E. Lefebvre, and L. Gremillet. "Channeling dynamics of relativistic-intensity laser pulses." Physics of Plasmas 19, no. 2 (2012): 022704. http://dx.doi.org/10.1063/1.3680613.

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Lee, P. H. Y. "On relativistic self focusing." Laser and Particle Beams 5, no. 1 (1987): 15–25. http://dx.doi.org/10.1017/s0263034600002457.

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Ponderomotive force initiated laser self focusing can be enhanced by relativistic electron motion in a laser plasma. We derive the nonlinear refractive index due to relativistic effects and find that relativistic self focusing becomes important for a 0·25 μm laser when the laser intensity exceeds 5 × 1018 W/cm2.
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Soldateschi, J., N. Bucciantini, and L. Del Zanna. "Axisymmetric equilibrium models for magnetised neutron stars in scalar-tensor theories." Astronomy & Astrophysics 640 (August 2020): A44. http://dx.doi.org/10.1051/0004-6361/202037918.

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Among the possible extensions of general relativity that have been put forward to address some long-standing issues in our understanding of the Universe, scalar-tensor theories have received a lot of attention for their simplicity. Interestingly, some of these predict a potentially observable non-linear phenomenon, known as spontaneous scalarisation, in the presence of highly compact matter distributions, as in the case of neutron stars. Neutron stars are ideal laboratories for investigating the properties of matter under extreme conditions and, in particular, they are known to harbour the str
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Dissertations / Theses on the topic "Intensité relativiste"

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Ouillé, Marie. "Génération d'impulsions laser proches du cycle optique en durée pour l'interaction laser-matière relativiste à haute cadence." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAE007.

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Cette thèse expérimentale s’est essentiellement déroulée au Laboratoire d’Optique Appliquée à Palaiseau (France), sur un système laser capable de générer des impulsions proches du cycle optique en durée avec des énergies de plusieurs mJ à une cadence de 1 kHz : la Salle Noire 2. Ce système laser Titane:Sapphire est double CPA avec un filtre non-linéaire entre les deux étages (basé sur la génération d’onde de polarisation croisée ou ‘XPW’) pour améliorer le contraste temporel, suivi d’un étage de post-compression dans une fibre flexible étirée à cœur creux. Grâce à ce système, nous étudions l’i
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Leblanc, Adrien. "Miroirs et réseaux plasmas en champs lasers ultra-intenses : génération d’harmoniques d’ordre élevé et de faisceaux d’électrons relativistes." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS384/document.

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Lors de la focalisation d’un laser femtoseconde ultra-intense [I>10¹⁶W/cm²] sur une cible solide, dès le début de l’impulsion le champ laser est suffisant pour totalement ioniser la surface de la cible. Le reste de l’impulsion est ensuite réfléchi dans la direction spéculaire par le plasma dense ainsi créé : c’est un miroir plasma. Le champ laser ultra-intense peut accélérer les électrons au sein du plasma à des vitesses relativistes. Certains sont éjectés vers le vide et ces miroirs plasmas sont ainsi des sources de faisceaux d’électrons énergétiques. De plus, ils rayonnent dans l’extrême
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Chopineau, Ludovic. "Physique attoseconde relativiste sur miroirs plasmas." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS132/document.

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Lors de la réflexion d’un laser femtoseconde ultra-intense [Iʟ > 10¹⁶ W/cm²] sur une cible solide, celle-ci est ionisée dès les premiers cycles de l’impulsion. Un plasma se détend alors vers le vide avec un profil exponentiel de longueur caractéristique Lg. Pour de faibles longueurs de gradient Lg < λʟ, le gradient plasma est considéré comme raide, il réfléchit spéculairement l’impulsion incidente : c’est un miroir plasma. De tels plasmas, réfléchissant pour la lumière, sont aujourd’hui exploités dans différentes applications scientifiques, comme l’accélération de particules par laser ou
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Kiefer, Daniel. "Relativistic electron mirrors from high intensity laser nanofoil interactions." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-153796.

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Kjellsson, Lindblom Tor. "Relativistic light-matter interaction." Doctoral thesis, Stockholms universitet, Fysikum, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-147749.

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During the past decades, the development of laser technology has produced pulses with increasingly higher peak intensities. These can now be made such that their strength rivals, and even exceeds, the atomic potential at the typical distance of an electron from the nucleus. To understand the induced dynamics, one can not rely on perturbative methods and must instead try to get as close to the full machinery of quantum mechanics as practically possible. With increasing field strength, many exotic interactions such as magnetic, relativistic and higher order electric effects may start to play a s
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Kiefer, Daniel [Verfasser], and Jörg [Akademischer Betreuer] Schreiber. "Relativistic electron mirrors from high intensity laser nanofoil interactions / Daniel Kiefer. Betreuer: Jörg Schreiber." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1032131314/34.

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Zaim, Neïl. "Modeling electron acceleration driven by relativistic intensity few-cycle laser pulses on overdense plasmas." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX089.

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Nous étudions dans cette thèse théorique et numérique l'accélération d'électrons lors de l'interaction entre une impulsion laser d'intensité relativiste et un plasma surdense. Cette interaction est très sensible au profil de densité sur la face avant du plasma et deux régimes différents, correspondant à deux thématiques de recherche développées dans cette thèse, peuvent être considérés.Premièrement, pour des interfaces plasma-vide très abruptes, les mécanismes menant à l'émission d'électrons sont bien compris. Les électrons gagnent en particulier une grande quantité d'énergie lors de leur inte
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Debayle, Arnaud. "Theoretical study of Ultra High Intensity laser-produced high-current relativistic electron beam transport through solid targets." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13708/document.

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Cette thèse porte sur l’étude théorique du transport d’un faisceau intense d’électrons relativistes dans une cible solide. Dans la première partie nous présentons les interprétations théoriques d’une partie des résultats d’une campagne d’expérience portant sur la production et le transport d’électrons relativistes dans une cible d’aluminium. Nous y démontrons la prédominance des e?ets collectifs sur les e?ets collisionels dans la première dizaine de microns de propagation grâce à des modèles de transports déjà existant au début de cette thèse. Ces modèles deviennent insu?sants dans le cas du t
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Coury, Mireille. "Generation and transport of high-current relativistic electron beams in high intensity laser-solid interactions." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=20410.

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In this thesis, the generation and transport of ultra-high intensity laser-driven relativistic electron beams in overdense plasma is investigated experimentally and numerically. The fast electron beam is experimentally diagnosed by means of a 2D Cu Ka imager and the TNSA-generated proton beam. Analytical models together with a 3D hybrid-PIC code are employed to simulate the beam properties in solids. The effects of the self-generated fields on the fast electron beam transport, the effect of the preplasma density scale length on the laser energy coupling to fast electrons and the influence of t
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Wilz, Mackenzie Charles. "Focused investigations of relativistic electron burst intensity, range, and dynamics space weather mission global positioning system." Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/wilz/WilzM0511.pdf.

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The FIREBIRD mission (Focused Investigations of Relativistic Electron Burst Intensity, Range, and Dynamics) is a low earth orbit, space weather, CubeSat mission which is comprised of a two satellite constellation. This constellation is responsible for the measurement of relativistic electron microbursts with very fine spatial and temporal resolution. To achieve the spatial and temporal requirements of the mission, a global positioning system (GPS), for the purpose of navigation position and timing, is to be implemented on both satellites within the constellation. The integration and testing of
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Books on the topic "Intensité relativiste"

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Kostyukov, Viktor. Theory of quantum chemistry. INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1090584.

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The textbook summarizes the basic theories of quantum chemistry. A comparative analysis of the computational efficiency of computational algorithms implementing these theories from the point of view of the ratio "accuracy — resource intensity" is performed. Considerable attention is paid to the problem of accounting for electronic correlation, as well as relativistic quantum chemical effects.
 Meets the requirements of the federal state educational standards of higher education of the latest generation.
 It is intended for undergraduate students of higher educational institutions; it
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Kiefer, Daniel. Relativistic Electron Mirrors: From High Intensity Laser–Nanofoil Interactions. Springer, 2014.

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Kiefer, Daniel. Relativistic Electron Mirrors: From High Intensity Laser–Nanofoil Interactions. Springer, 2016.

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Kiefer, Daniel. Relativistic Electron Mirrors: From High Intensity Laser-Nanofoil Interactions. Springer, 2014.

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Book chapters on the topic "Intensité relativiste"

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Wang, H., O. Albere, J. Nees, D. Liu, G. Mourou, and Z. Chang. "Generation of Relativistic Intensity Pulses at 300-Hz Repetition Rate." In Ultrafast Phenomena XII. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56546-5_25.

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Pirozhkov, Alexander S., Sergei V. Bulanov, Timur Zh Esirkepov, Akito Sagisaka, Toshiki Tajima, and Hiroyuki Daido. "Intensity Scalings of Attosecond Pulse Generation by the Relativistic-irradiance Laser Pulses." In Springer Series in Optical Sciences. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-49119-6_35.

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Bowes, B. T., M. C. Downer, H. Langhoff, et al. "Ultrafast radial transport in a micron-scale aluminum plasma excited at relativistic intensity." In Springer Series in Chemical Physics. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27213-5_103.

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Rodionov, V. N. "Non-Hermitian $$\mathcal{PT}$$ PT -Symmetric Relativistic Quantum Theory in an Intensive Magnetic Field." In Springer Proceedings in Physics. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31356-6_24.

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Metral, E., G. Rumolo, and W. Herr. "Impedance and Collective Effects." In Particle Physics Reference Library. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34245-6_4.

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AbstractAs the beam intensity increases, the beam can no longer be considered as a collection of non-interacting single particles: in addition to the “single-particle phenomena”, “collective effects” become significant. At low intensity a beam of charged particles moves around an accelerator under the Lorentz force produced by the “external” electromagnetic fields (from the guiding and focusing magnets, RF cavities, etc.). However, the charged particles also interact with themselves (leading to space charge effects) and with their environment, inducing charges and currents in the surrounding s
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Sagisaka, A., H. Daido, K. Ogura, et al. "Observation of Thin Foil Preformed Plasmas with a Relativistic-intensity Ultra-short Pulse Laser by Means of Two-color Interferometer." In Springer Series in Optical Sciences. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-49119-6_36.

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Alcaraz-Muñoz, Verónica, María Isabel Cifo Izquierdo, and José I. Alonso Roque. "When Playing Is Not About the Physical Sporting Experience." In Advances in Early Childhood and K-12 Education. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-9621-0.ch008.

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The aim of this chapter was to examine the positive and negative emotional intensity in schoolchildren with and without sport experience, when participating in motor games. One hundred fifty-two students of Elementary Education (age range = 8–12 years, Mage = 9.72, SD = 1.18) belonging to two Spanish schools participated. After finishing each of the games, the students completed the Games and Emotions Scale for Children to assess the emotional intensity experienced. The intensity of positive emotions was higher (M = 3.71, SD = 0.89) than negative emotions (M = 1.18, SD = 0.25, p < 0.001
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Dyall, Kenneth G., and Knut Faegri. "Introduction." In Introduction to Relativistic Quantum Chemistry. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195140866.003.0005.

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The quote above from Paul Adrian Maurice Dirac (1929) has been somewhat of an article of faith for modern quantum chemistry. Intensive efforts on the development of theory, algorithms, and techniques have made computational quantum chemistry a very successful representative of the “third way” in modern science—computer modeling has come into its own alongside experiment and theory. Fifty years ago this was a branch of science where predictions were at best qualitative, founded on rather approximate models. Many of these models were quite sophisticated, and much of the insight gained is still v
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Suprun, Sergey P., Anatoly P. Suprun, and Victor F. Petrenko. "An Object-Based Model in Physics." In Algorithms for Construction of Reality in Physics. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815049664122020007.

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A topological model of the object-based space is represented as a bundle allowing for a complete description of an object by specifying the intensity and rigidity of its properties, and the object itself is represented as a resultant vector. As a case study, an object-based space is constructed that makes it possible to obtain the relations of the special theory of relativity as the conservation laws of informational content without using the hypothesis on the existence of space and time.
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Stewart, Ian. "6. Physical infinity." In Infinity: A Very Short Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/actrade/9780198755234.003.0007.

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‘Physical infinity’ moves from mathematics to the real world and tackles questions such as ‘is space infinite?’ In many areas of physics, the presence of an infinite quantity (often called a singularity) is construed as a warning that the theory is losing touch with reality. For instance, according to classical ray optics, the intensity of light at the focus of a lens is infinite. The physical resolution of this difficulty involves replacing light rays by waves. Singularities are discussed in three physical contexts: optics, Newtonian gravity, and Albert Einstein’s relativity. However, there’s
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Conference papers on the topic "Intensité relativiste"

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Mikhailova, Julia. "Plasma optics for ultrafast high-intensity light sources." In Coherent and Incoherent Radiation Sources based on Laser-driven Relativistic Plasma Waves, edited by Dino A. Jaroszynski and MinSup Hur. SPIE, 2025. https://doi.org/10.1117/12.3065349.

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Mori, Michiaki, Hideyuki Kotaki, Yukio Hayashi, et al. "Pointing stable low-divergence 100 keV-class electron beam generation from microcapillary target under sub-relativistic laser intensity." In Laser Applications Conference. Optica Publishing Group, 2024. https://doi.org/10.1364/lac.2024.lw5b.1.

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Pointing stable low-divergence 100 keV-class electron beam generation driven by near critical density laser wakefield acceleration was performed. A ~30 mrad low divergence electron beam from a microcapillary hole with energies up to 400 keV was achieved at a maximum laser intensity of 1018 W/cm2. Here, shot-to-shot pointing fluctuations of the electron beam were 1.8 mrad in root-mean-square (rms). The capillary microstructure provides a very stable and low divergence beam and will be a valuable tool for various applications such as radiotherapy.
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Bardsley, J. N., and B. M. Penetrante. "Creation of relativistic plasmas using ultra-high-intensity laser radiation." In Short Wavelength Coherent Radiation: Generation and Applications. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/swcr.1991.tub1.

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Theories of ponderomotive forces, relativistic focusing, and harmonic generation are reviewed, and nonlinear effects are demonstrated by using numerical simulations of plasmas produced by subpicosecond lasers.
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Meyerhofer, D. D., C. I. Moore, and J. P. Knauer. "Forward Ponderomotive Acceleration of Electrons from the Focus of a High-Intensity Laser." In High Resolution Fourier Transform Spectroscopy. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/hrfts.1994.tub2.

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The quiver motion of an electron in a high-intensity laser field becomes relativistic (β= v/c ~ 1) at high-field strengths. This relativistic motion can lead to the emission of second and higher harmonics of the laser field1 and to forward ponderomotive acceleration of the electrons emerging from the laser focus. We will present the first observations of forward ponderomotive acceleration of the electrons born by field ionization at the center of the laser focus.
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Lachapelle, Amélie, Kazuto Otani, Sylvain Fourmaux, et al. "Direct Laser Field Electron Acceleration in Relativistic Regime." In High Intensity Lasers and High Field Phenomena. OSA, 2016. http://dx.doi.org/10.1364/hilas.2016.hm6b.2.

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Ouillé, Marie, Frederik Boehle, Maxence Thévenet, et al. "Relativistic-Intensity Near-Single-Cycle KHz Laser Driver." In High Intensity Lasers and High Field Phenomena. OSA, 2018. http://dx.doi.org/10.1364/hilas.2018.ht2a.3.

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Ekanayake, Nagitha, Sui Luo, Patrick Grugan, et al. "Electron Shell Ionization of Atoms with Classical, Relativistic Scattering." In High Intensity Lasers and High Field Phenomena. OSA, 2014. http://dx.doi.org/10.1364/hilas.2014.hth3b.4.

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Tsaur, Gin-yih. "Relativistic birefringence induced by high-intensity laser field in plasma." In High Intensity Lasers and High Field Phenomena. OSA, 2011. http://dx.doi.org/10.1364/hilas.2011.hwc17.

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Chang Hee Nam, I. Jong Kim, Hyung Taek Kim, et al. "Laser particle acceleration at relativistic laser intensity." In 2014 International Conference Laser Optics. IEEE, 2014. http://dx.doi.org/10.1109/lo.2014.6886329.

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Wang, H., O. Albert, D. Liu, G. Mourou, and Z. Chang. "Generation of Relativistic Intensity Pulses at kHz." In International Conference on Ultrafast Phenomena. OSA, 2000. http://dx.doi.org/10.1364/up.2000.mf14.

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Reports on the topic "Intensité relativiste"

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I.Y. Dodin, N.J. Fisch, and G.M. Fraiman. Lagrangian Formulation of Relativistic Particle Average Motion in a Laser Field of Arbitrary Intensity. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/811961.

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