Relevant bibliographies by topics / Gamma photons

Contents

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

Academic literature on the topic 'Gamma photons'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Gamma photons"

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Tajudin, S. M., Y. Namito, T. Sanami, and H. Hirayama. "PHOTON FIELD OF ~100–200 KEV FOR ENVIRONMENTAL DOSEMETER CALIBRATION." Radiation Protection Dosimetry 188, no. 4 (2020): 486–92. http://dx.doi.org/10.1093/rpd/ncz308.

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Abstract As a reference photon field, several radionuclides have been used frequently, such as 241Am,137Cs and60 Co for calibration. These nuclides provide mono-energy photons for dosemeters covering few tens of keV–MeV. The main energy around 200 keV is important for both environmental and medical fields since the former should consider scattering photons and the later should measure photons from X-ray generator. In our previous work, a backscattered layout can provide a uniform photon field spectra and dose rate with an energy of 190 keV by using an affordable intensity 137 Cs gamma source.
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Khumalo, Bhekuzulu. "What is Heat; The Photon is Heat." JOURNAL OF ADVANCES IN PHYSICS 15 (January 12, 2019): 6018–38. http://dx.doi.org/10.24297/jap.v15i0.7896.

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All photons will burn you. How do we describe photons as having different amounts of energy? This paper illustrates photons do not have different amounts of energies, rather different types of energy. The experiment of 1800 provides enough data to be analyzed because it has that third point to question the idea that photons carry different amounts of energy. This paper argues that all photons have equal amounts of energy just different types of energy. The composition of the energy within a photon depends on the frequency of a photon, a lower frequency photon like those represented by infrared
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Abdullah, Nazifah, Inayatullah Shah Syed, and Ahmad Zakaria. "Flat sheet of Zinc material as a filter for gamma photons in Tc-99mm SPECT imaging." International Journal of Engineering & Technology 7, no. 4.15 (2018): 311. http://dx.doi.org/10.14419/ijet.v7i4.15.23018.

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Purpose of the Study: Scattered gamma photons in single photon emission computed tomography (SPECT) is one of the main issues that degrade the image quality. There are several types of scatter correction methods. However, none of the technique is applied in routine clinical Tc-99m SPECT imaging. Therefore, Zinc (Zn) material filter was constructed for pre-filtration of scattered gamma photons in Tc-99m single photon emission computed tomography (SPECT).Materials and Methods: Tc-99m radioactivity was administered into the Carlson’s phantom. Planar and tomographic data were acquired with and wit
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Coussement, R., S. Gheysen, I. Serdons, et al. "Slowing Down of Gamma Photons." Hyperfine Interactions 151/152, no. 1-4 (2003): 93–104. http://dx.doi.org/10.1023/b:hype.0000020406.76483.05.

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RAZZAQUE, SOEBUR, PETER MÉSZÁROS, and BING ZHANG. "GEV TO PEV ENERGY PHOTON INTERACTIONS IN GAMMA-RAY BURST FIREBALLS AND SURROUNDINGS." International Journal of Modern Physics A 20, no. 14 (2005): 3163–66. http://dx.doi.org/10.1142/s0217751x05026030.

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Shock acceleration mechanism in gamma-ray bursts may produce photons up to a few PeV energy. Photons above 10-100 GeV and below a PeV energy are trapped inside the fireball due to a high opacity of electron-positron pair production with other photons. High energy photons escaping the fireball may interact with cosmic background radiation and provide delayed gamma-ray emission detectable by GLAST. Detection of the prompt and delayed emission may provide useful constraints on the gamma-ray burst model and also on the inter-galactic magnetic field.
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Turşucu, A., D. Demir, and P. Önder. "Effective Atomic Number Determination of Rare Earth Oxides with Scattering Intensity Ratio." Science and Technology of Nuclear Installations 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/738978.

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Effective atomic numbers () of scientific samples (rare earth) were determined experimentally by scattering of 59.54 keV gamma photons from 5 Ci241Am annular radioactive source. The scattered gamma photons were collected by using a high-resolution HPGe semiconductor detector placed at to the incident beam. This experiment was carried out on several elements in the atomic range for 59.54 keV incident photons. Photopeak efficiency and air and sample absorption corrections were performed on Rayleigh to Compton scattering intensity ratio; then the ratio was plotted as a function of atomic number a
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Sabharwal, Arvind D., Bhajan Singh, and B. S. Sandhu. "Energy Dependence of Parameters Characterizing Multiply Backscattering of Gamma Photons." Journal of Nuclear Physics, Material Sciences, Radiation and Applications 1, no. 2 (2014): 239–46. http://dx.doi.org/10.15415/jnp.2014.12020.

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John, R. W. "Brilliance of X rays and gamma rays produced by Compton backscattering of laser light from high-energy electrons." Laser and Particle Beams 16, no. 1 (1998): 115–27. http://dx.doi.org/10.1017/s0263034600011824.

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In the Compton backscattering of laser light from a high-energy electron beam, the scattered photons are, as is well known, much harder than the incident photons. In connection with the inverse Compton effect, the spectral brightness, the brilliance of the backscattered radiation is theoretically investigated. For the brilliance B [photons/(sec × mm2 × sr × 0.1% bandwidth)] of the scattered radiation a defining relation is given. Then, the intensity I0 and the wavelength λ 0 of the incident laser light are assumed such that the intensity parameter η is sufficiently smaller than 1, so that with
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Dzhappuev, D. D., I. M. Dzaparova, E. A. Gorbacheva, et al. "Search for astrophysical PeV gamma rays from point sources with Carpet-2." EPJ Web of Conferences 207 (2019): 03004. http://dx.doi.org/10.1051/epjconf/201920703004.

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Early results of the search for Eγ > 1 PeV cosmic photons from point sources with the data of Carpet–2, an air-shower array equipped with a 175 m2 muon detector, are presented. They include 95% CL upper limits on PeV photon fluxes from stacked directions of high-energy IceCube neutrino events and from four predefined sources, Crab, Cyg X-3, Mrk 421 and Mrk 501. An insignificant excess of events from Mrk 421 will be further monitored. Prospects of the use of the upgraded installation, Carpet–3 (410 m2 muon detector), scheduled to start data taking in 2019, for searches of Eγ > 100 TeV pho
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Mastichiadis, A., R. J. Protheroe, and S. A. Stephens. "Cosmic Ray Positron Production by Gamma Ray Interactions on Starlight." Publications of the Astronomical Society of Australia 9, no. 1 (1991): 115–17. http://dx.doi.org/10.1017/s1323358000025133.

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AbstractWe examine the production of cosmic ray positrons by photon-photon pair production of high-energy γ-rays on starlight photons. We start by calculating the production rate as a function of positron energy and distance from the Sun resulting from interactions with sunlight. The results are generalized to production on other types of star. We calculate the average production rate per unit volume averaged over the local region of the galaxy, and we estimate the contribution to the observed intensity from this process.
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Dissertations / Theses on the topic "Gamma photons"

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Liu, Kun. "Observation du boson de Higgs dans sa désintégration en gamma+gamma et recherche de sa désintégration en Z+gamma avec le détecteur ATLAS." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-01071714.

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Ce travail de thése concerne la recherche du boson de Higgsa laide de canaux de désinégration contenant des photons dans létat final, baée sur les données enregistrées par le détecteur ATLAS en 2011 et 2012, a une énergie dans le centre de masse des collisions proton-proton center-mass-energy et 8 TeV. La sélection deséévenements, les principaux bruits de fond, les propriéés du signal, la discrimination statistique entre signal et bruits de fond, ainsi que l'interprétation des ésultats en terme de boson de Higgs du moéle standard sont discués. Dans le canal de désinégration H to gamma+gamma, u
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Schnorrenberger, Linda [Verfasser]. "Characterization of Gamma-Ray Detectors with Tagged Photons / Linda Schnorrenberger." Aachen : Shaker, 2012. http://d-nb.info/1069047708/34.

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James, Kory T. "High energry gamma-ray source search with SPASE-2." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 65 p, 2007. http://proquest.umi.com/pqdweb?did=1397914891&sid=16&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Franczuk, Stefan. "The asymmetry of the '1'2C(#gamma# #->#,pn) reaction." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266742.

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Esnault, Léo. "Production de photons gamma lors de l'interaction laser-matière et création de paires électron-positron par collision de photons." Thesis, Bordeaux, 2021. http://www.theses.fr/2021BORD0077.

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La création de paires électron-positron par collision de deux photons réels (processus Breit-Wheeler linéaire) est un des processus de base de l’électrodynamique quantique, et est supposé sous-tendre un large éventail de phénomènes astrophysiques des hautes énergies, tels que l’opacité de l’Univers aux photons TeV ou la production de plasmas de paires au voisinage d’objets compacts (AGN, pulsars). Cependant, ce processus n’a jusqu’à présent jamais été directement observé en laboratoire depuis sa prédiction en 1934, et ce principalement à cause de l’absence de sources de photons d’énergie autou
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FONTENAY, CHAMPEAUX SANDRINE. "Etude d'un spectrometre gamma a effet compton pour hauts flux de photons dans la gamme d'energie 0,5-12 mev." Paris 11, 1995. http://www.theses.fr/1995PA112054.

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Cette these porte sur l'etude d'un spectrometre gamma visant l'observation de hauts flux de photons dans une gamme d'energie s'etendant de 0,5 a 12 mev avec une resolution de l'ordre de 0,3 mev. Le choix de l'instrument s'est porte sur un spectrometre a effet compton et a gradient de champ magnetique alliant compacite et grande gamme d'analyse spectrale. Le flux de photons frappe une cible mince et produit par effet compton des electrons dont l'energie est proche de celle des photons incidents dans un cone d'ouverture faible. Ces electrons sont analyses par le secteur magnetique et recueillis
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Brasse, David. "Detection en coincidence des photons de 511 kev provenant de l'annihilation des positons sur gamma-camera conventionnelle : optimisation et analyse des potentialites." Paris 5, 1999. http://www.theses.fr/1999PA05N148.

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Beaucourt, Léo. "Study of B0 -> K*0 gamma, Bs0 -> phi gamma and Bs0 -> K*0 gamma decays using converted photons with the LHCb detector." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY085/document.

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L'étude présentée dans cette thèse est dédiée à l'analyse des désintégrations radiatives de mésons beaux, processus faisant intervenir le quark b ce dernier se désintégrant par interaction faible en un quark s avec émission d'un photon. Ce type de désintégration est interdit à l'arbre en théorie quantique des champs et doit donc s'opérer à l'aide de boucles. Ces désintégrations ont des rapports d'embranchement très faibles, de l'ordre de 10^{-5}. Dès lors, l’étude de ces processus à l'aide du détecteur LHCb permet de mesurer précisément des observables reliées à ces processus, telles que les r
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Pelaez, François. "Les sursauts gamma cosmiques et solaires observés par le télescope SIGMA." Toulouse 3, 1993. http://www.theses.fr/1993TOU30124.

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Les sursauts gamma sont de brusques et tres intenses emissions de photons, dans la gamme d'energie entre quelques dizaines de kiloelectronvolts et quelques dizaines de megaelectronvolts, dont la duree peut varier entre quelques millisecondes et plusieurs minutes. Le telescope sigma est un instrument embarque sur satellite capable de fournir des images du ciel dans le domaine des rayons gamma mous (30 kev-1. 3 mev) avec une resolution angulaire de quelques minutes d'arc. Son principe d'imagerie repose sur l'association d'un masque code et d'un detecteur de position (gamma-camera en nai), le tou
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Sarria, David. "Modèle Monte Carlo du transport dans l'atmosphère des électrons relativistes et des photons gamma en relation avec les TGF." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30188/document.

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Les orages sont des sources de phénomènes transitoires intenses, notamment lumineux, dans le domaine visible, mais également dans le domaine des rayons X et gamma. Ces phénomènes sont détectés sous la forme de flash de photons X et gamma appelés "Terrestrial Gamma Ray Flashes" (TGF). L'objet de cette thèse est le développement d'un modèle numérique pour étudier et comprendre les mécanismes associés aux TGF. L'étude des TGF est donc importante pour comprendre la physique des éclairs et des orages (qui sont des phénomènes très communs mais dont la microphysique reste encore très mal comprise) ai
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Books on the topic "Gamma photons"

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Adriaan, Buijs, Erné Frits C, and International Workshop on Gamma-Gamma Collisions (11th : 1997 : Netherlands), eds. Photon '97: Incorporating the XIth International Workshop on Gamma-Gamma Collisions, Egmond aan Zee, The Netherlands, 10-15 May, 1997. World Scientific, 1998.

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Brown, R. Hanbury. Photons, galaxies, and stars: Selected papers of R. Hanbury Brown, Raman professor, 1974. Indian Academy of Sciences, 1985.

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Roberto, Battiston, and Bertucci Bruna, eds. Matter, antimatter, and dark matter: Proceedings of the second international workshop, Trento, Italy, 29-30 October 2001. World Scientific, 2002.

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1940-, Miller David J., Cartwright Susan L, Khoze V. A. 1940-, and International Workshop on Gamma Gamma Collisions and Related Processes (10th : 1995 : Sheffield, England), eds. Photon '95: Incorporating the Xth International Workshop on Gamma Gamma Collisions and Related Processes : Sheffield, UK, 8-13 April, 1995. World Scientific Pub. Co., 1995.

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INS, Workshop "Physics of e⁺e⁻ e⁻[gamma] and [gamma] [gamma] Collisions at Linear Accelerators" (1994 Institute for Nuclear Study University of Tokyo). Proceedings of INS Workshop "Physics of e⁺e⁻, e⁻[gamma] and [gamma] [gamma] Collisions at Linear Accelerators": Institute for Nuclear Study, University of Tokyo, December 20-22, 1994. Tokyo U., INS, 1995.

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Napoli, Museo nazionale di. Complete Unified Theory, Nirmalendu Das: Key words: mass of a photon & a graviton, unification of physics, value of Pi at excited state, unknown weight of radioactive elements, fission reaction of uranium, gamma ray burst, black hole properties through complete unified theory. Edited by De Petra Giulio and Italy Ministero dell'educazione nazionale. G.P.Dev Choudhury, Bani Prokash (P) Limited, Panbazar, Guwahati - 781001, Assam, India in G.P.Dev Choudhury, Bani Prokash (P) Limited, Panbazar, Guwahati - 781001, Assam, India ., 1998.

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Hydrodynamics of relativistic fireballs. National Aeronautics and Space Administration, 1993.

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D, Paglione Timothy A., and United States. National Aeronautics and Space Administration., eds. Diffuse gamma-ray emission from the starburst galaxy NGC 253. National Aeronautics and Space Administration, 1995.

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Gamma spectrometry for plutonium using low energy photons: Isotopic Composition and concentration determination. Bhabha Atomic Research Centre, 2011.

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Fireballs. National Aeronautics and Space Administration, 1993.

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Book chapters on the topic "Gamma photons"

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Smith, David M. "Hard X-ray and gamma-ray detectors." In Observing Photons in Space. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7804-1_21.

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Stecker, F. W., and O. C. De Jager. "Absorption of High Energy Gamma-Rays by Low Energy Intergalactic Photons." In TeV Gamma-Ray Astrophysics. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0171-1_29.

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Kleinknecht, Konrad, and Ulrich Uwer. "Symmetry Violations and Quark Flavour Physics." In Particle Physics Reference Library. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38207-0_9.

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AbstractOne of the surprising facts in our present understanding of the development of the Universe is the complete absence of “primordial” antimatter from the Big Bang about 13.7 billion years ago. The detection of charged cosmic-ray particles by magnetic spectrometers borne by balloons, satellites, and the space shuttle has shown no evidence for such primordial (high-energy) antibaryons; nor has the search for gamma rays from antimatter–matter annihilation yielded any such observation. In the early phases of the expanding Universe, a hot (1032 K) and dense plasma of quarks, antiquarks, leptons, antileptons and photons coexisted in equilibrium. This plasma expanded and cooled down, and matter and antimatter could recombine and annihilate into photons. If all interactions were symmetric with respect to matter and antimatter, and if baryon and lepton numbers were conserved, then all particles would finally convert to photons, and the expansion of the Universe would shift the wavelength of these photons to the far infrared region.
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Hillas, A. M., and J. R. Patterson. "Characteristics of Cerenkov Images Produced by Primary Photons and Hadrons and by Local Muons." In Very High Energy Gamma Ray Astronomy. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3831-1_37.

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Das, G. S., P. Hazarika, and U. D. Goswami. "Angular Distributions of Cherenkov Photons in Extensive Air Showers of Gamma and Proton Primaries." In Springer Proceedings in Physics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25619-1_66.

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Weik, Martin H. "gamma photon." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_7868.

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Beard, M. W., P. R. Blake, A. D. Bullock, P. J. Edwards, W. F. Nash, and G. B. Stanley. "Muons in Photon Induced Extensive Air Showers." In Very High Energy Gamma Ray Astronomy. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3831-1_45.

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Szirmay-Kalos, L., B. Tóth, M. Magdics, D. Légrády, and A. Penzov. "Gamma Photon Transport on the GPU for PET." In Large-Scale Scientific Computing. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12535-5_51.

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Biermann, Peter L. "Photon and Neutrino-Emission from Shockwaves in Active Galactic Nuclei." In Cosmic Gamma Rays, Neutrinos, and Related Astrophysics. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0921-2_2.

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Burns, H. Donald, Kwamena E. Baidoo, and Alan A. Wilson. "Single Photon, Gamma Emitting Radiotracers for Use in Imaging." In Nuclear Imaging in Drug Discovery, Development, and Approval. Birkhäuser Boston, 1993. http://dx.doi.org/10.1007/978-1-4684-6808-3_5.

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Conference papers on the topic "Gamma photons"

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De Cesare, G. "Evaluation of the INTEGRAL/IBIS photons detectors efficiencies by Monte Carlo simulation." In GAMMA 2001: Gamma-Ray Astrophysics 2001. AIP, 2001. http://dx.doi.org/10.1063/1.1419505.

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Punch, M., C. W. Akerlof, M. F. Cawley, et al. "Detection of TeV photons from Markarian 421." In COMPTON GAMMA-RAY OBSERVATORY. AIP, 1993. http://dx.doi.org/10.1063/1.44272.

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Mazin, Daniel. "EBL signature on VHE gamma photons." In Science with the New Generation of High Energy Gamma-ray experiments, 10th Workshop. Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.218.0013.

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Lamb, R. C., C. W. Akerlof, M. F. Cawley, et al. "Observations of TeV photons at the Whipple Observatory." In High Energy Gamma−Ray Astronomy. AIP, 1991. http://dx.doi.org/10.1063/1.40323.

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Durouchoux, Ph, and P. Wallyn. "Time variable multiple backscattered 511 keV photons from black holes." In COMPTON GAMMA-RAY OBSERVATORY. AIP, 1993. http://dx.doi.org/10.1063/1.44310.

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Jalali, Majid. "Measurement and Calculation of Gamma Radiation from HWZPR Reactor." In 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/icone14-89091.

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HWZPR is a research reactor with natural uranium fuel, D2O moderator and graphite reflector with maximum power of 100 W. It is a suitable means for theoretical research and heavy water reactor experiments. Neutrons from the core participate in different nuclear reactions by interactions with fuel, moderator, graphite and the concrete around the reactor. The results of these interactions are the production of prompt gammas in the environment. Useful information is gained by the reactor gamma spectrum measurement from point of view of relative quantity and energy distribution of direct and scatt
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Gupta, Nayantara, and Bing Zhang. "Detecting High Energy Photons from Gamma Ray Bursts." In THE FIRST GLAST SYMPOSIUM. AIP, 2007. http://dx.doi.org/10.1063/1.2757398.

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"Search for ultra-high energy photons with the Pierre Auger observatory." In HIGH ENERGY GAMMA-RAY ASTRONOMY: 6th International Meeting on High Energy Gamma-Ray Astronomy. Author(s), 2017. http://dx.doi.org/10.1063/1.4969009.

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Harding, Alice K., and Matthew G. Baring. "Escape of high-energy photons from relativistically expanding gamma-ray burst sources." In Gamma-ray bursts: Second workshop. AIP, 1994. http://dx.doi.org/10.1063/1.45860.

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Donea, Alina C., Felix A. Aharonian, Werner Hofmann, and Frank Rieger. "Absorption of gamma-ray jet photons in the external photon fields of a binary supermassive black hole system." In HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP, 2008. http://dx.doi.org/10.1063/1.3076755.

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Reports on the topic "Gamma photons"

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Seltzer, Stephen. Calculations of fluence rates of unscattered x- and gamma-ray photons emerging from model spheres of special nuclear material. National Institute of Standards and Technology, 2009. http://dx.doi.org/10.6028/nist.ir.7557.

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Yee, J. H., D. J. Mayhall, and M. F. Bland. Theoretical Model for the EM Effects Induced by High-Energy Photons (Gamma, X-ray) in Dielectric Materials and Electronic Systems. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/15004648.

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Dickens, J. K. Study of radionuclides created by /sup nat/Ni(. gamma. ,xn yp) reactions for bremsstrahlung photons produced by 140-MeV electrons. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/6139729.

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Miller, M. A., and J. K. Dickens. Study of radionuclides created by sup 181 Ta(. gamma. ,xn yp) reactions for bremsstrahlung photons produced by 150-MeV electrons. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5810666.

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Miller, M. A., and J. K. Dickens. Study of radionuclides created by {sup 181}Ta({gamma},xn yp) reactions for bremsstrahlung photons produced by 150-MeV electrons. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10130719.

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Rawlings, Renata A. Distinguishing Photons from Muons using the Time-Over-Threshold in the Tracker from the Gamma Ray Large Area Space Telescope. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/815654.

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Bu, Xuebing. $H \to \gamma\gamma$ search and direct photon pair production differential cross section. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/984571.

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Gronau, Michael. Measuring the Photon Polarization in Radiative B --> K-pi-pi-gamma. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/787197.

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Lauer, Bryan Adrian. A Search for High Mass Photon Pairs in $p\bar{p} \to \gamma\gamma jj$ Events at 1.8-TeV. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/1421710.

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Depriest, Kendall. Low Energy Photon Filter Box Optimization Study for the Gamma Irradiation Facility (GIF). Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1761857.

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