Results 31 to 40 of about 720,850 (319)

A Geant4 Fano test for novel very high energy electron beams

Physics in Medicine & Biology, 2021
Abstract Objective. The boundary crossing algorithm available in Geant4 10.07-p01 general purpose Monte Carlo code has been investigated for a 12 and 200 MeV electron source by the application of a Fano cavity test. Approach. Fano conditions were enforced
M McManus, F Romano, G Royle, H Palmans, A Subiel   +4 more
openaire   +3 more sources

Inefficient Cosmic-Ray Diffusion around Vela X: Constraints from H.E.S.S. Observations of Very High-energy Electrons [PDF]

Astrophysical Journal, 2018
Vela X is a nearby pulsar wind nebula (PWN) powered by a ∼104 year old pulsar. Modeling of the spectral energy distribution of the Vela X PWN has shown that accelerated electrons have largely escaped from the confinement, which is likely due to the ...
Zhi-Qiu Huang, K. Fang, Ruo-Yu Liu, Xiang-Yu Wang   +3 more
semanticscholar   +1 more source

Extended Very-High-Energy Gamma-Ray Emission Surrounding PSR J0622+3749 Observed by LHAASO-KM2A. [PDF]

Physical Review Letters, 2021
We report the discovery of an extended very-high-energy (VHE) gamma-ray source around the location of the middle-aged (207.8 kyr) pulsar PSR J0622+3749 with the Large High-Altitude Air Shower Observatory (LHAASO).
F. Aharonian, Q. An, Axikegu, L. Bai, Y. X. Bai, Y. Bao, D. Bastieri, X. Bi, Y. Bi, H. Cai, J. Cai, Z. Cao, J. Chang, J. F. Chang, X. Chang, B. M. Chen, J. Chen, L. Chen, M. J. Chen, M. L. Chen, Q. H. Chen, S. H. Chen, S. Z. Chen, T. L. Chen, X. L. Chen, Y. Chen, N. Cheng, Y. D. Cheng, S. Cui, X. Cui, Y. D. Cui, B. Dai, H. Dai, Z. Dai, Danzengluobu, D. della Volpe, B. D’Ettorre Piazzoli, X. J. Dong, J. H. Fan, Y. Z. Fan, Z. Fan, J. Fang, K. Fang, C. Feng, L. Feng, S. Feng, Y. L. Feng, B. Gao, C. Gao, Q. Gao, W. Gao, M. Ge, L. Geng, G. Gong, Q. Gou, M. Gu, J. G. Guo, X. L. Guo, Y. Q. Guo, Y. Y. Guo, Y. A. Han, H. H. He, Haoyu He, J. C. He, S. He, X. B. He, Y. He, M. Heller, Y. Hor, C. Hou, X. Hou, H. B. Hu, S. Hu, S. C. Hu, X. J. Hu, D. H. Huang, Q. Huang, W. H. Huang, X. T. Huang, Z. C. Huang, F. Ji, X. Ji, H. Jia, K. Jiang, Z. J. Jiang, C. Jin, D. Kuleshov, K. Levochkin, B. B. Li, C. Li, F. Li, H. B. Li, H. C. Li, H. Y. Li, J. Li, K. Li, W. L. Li, X. Li, X. R. Li, Y. Li, Y. Z. Li, Z. Li, E. Liang, Y. F. Liang, S. Lin, B. Liu, C. Liu, D. Liu, H. Liu, H. D. Liu, J. Liu, J. L. Liu, J. S. Liu, J. Y. Liu, M. Y. Liu, R. Y. Liu, S. M. Liu, W. Liu, Y. N. Liu, Z. X. Liu, W. Long, R. Lu, H. Lv, B. Ma, L. L. Ma, X. H. Ma, J. Mao, A. Masood, W. Mitthumsiri, T. Montaruli, Y. Nan, B. Pang, P. Pattarakijwanich, Z. Pei, M. Qi, D. Ruffolo, V. Rulev, Alejandro Sáiz, L. Shao, O. Shchegolev, X. Sheng, J. Shi, H. C. Song, Y. Stenkin, V. Stepanov, Q. N. Sun, X. N. Sun, Z. B. Sun, P. Tam, Z. B. Tang, W. Tian, B. D. Wang, C. Wang, H. Wang, H. G. Wang, J. C. Wang, J. S. Wang, L. P. Wang, L. Y. Wang, R. N. Wang, W. Wang, X. G. Wang, X. J. Wang, X. Y. Wang, Y. D. Wang, Y. J. Wang, Y. P. Wang, Z. Wang, Z. H. Wang, Z. X. Wang, D. Wei, J. J. Wei, Y. J. Wei, T. Wen, C. Y. Wu, H. R. Wu, S. Wu, W. X. Wu, X. F. Wu, S. Xi, J. Xia, J. Xia, G. Xiang, G. Xiao, H. Xiao, G. Xin, Y. Xin, Y. Xing, D. L. Xu, R. Xu, L. Xue, D. Yan, C. W. Yang, F. F. Yang, J. Y. Yang, L. L. Yang, M. J. Yang, R. Z. Yang, S. B. Yang, Y. H. Yao, Z. Yao, Y. Ye, L. Yin, N. Yin, X. You, Z. You, Y. H. Yu, Q. Yuan, H. Zeng, T. Zeng, W. Zeng, Z. Zeng, M. Zha, X. Zhai, B. B. Zhang, H. M. Zhang, H. Y. Zhang, J. L. Zhang, J. W. Zhang, L. Zhang, L. X. Zhang, P. F. Zhang, P. P. Zhang, R. Zhang, S. R. Zhang, S. S. Zhang, X. Zhang, X. P. Zhang, Y. Zhang, Y. Zhang, Y. F. Zhang, Y. L. Zhang, B. Zhao, J. Zhao, L. Zhao, L. Z. Zhao, S. P. Zhao, F. Zheng, Y. Zheng, B. Zhou, H. Zhou, J. N. Zhou, P. Zhou, R. Zhou, X. X. Zhou, C. G. Zhu, F. Zhu, H. Zhu, K. Zhu, X. Zuo, X. Y. Huang   +250 more
semanticscholar   +1 more source

Focused VHEE (very high energy electron) beams and dose delivery for radiotherapy applications [PDF]

Scientific Reports, 2021
AbstractThis paper presents the first demonstration of deeply penetrating dose delivery using focused very high energy electron (VHEE) beams using quadrupole magnets in Monte Carlo simulations. We show that the focal point is readily modified by linearly changing the quadrupole magnet strength only.
Whitmore, L., Mackay, R. I., van Herk, M., Jones, J. K., Jones, R. M.   +4 more
openaire   +4 more sources

High-resolution maps of the characteristic energy of precipitating auroral particles [PDF]

, 2001
For the first time we produce high-resolution maps of the characteristic energy of precipitating electrons from ground-based instrumentation in the auroral zone over northern Scandinavia. This is done by combining intensity-calibrated optical data at 557.
Kosch, M.J., del Pozo, C.F., Honary, F., Hagfors, T., Marple, S., Kosch, M., del Pozo, C., del Pozo, C. F., S. R. Marple, Marple, S.R., Kosch, M. J., M. J. Kosch, Marple, S. R., F. Honary, T. Hagfors, C. F. del Pozo   +15 more
core   +1 more source

Calibration and Performance of the CMS Electromagnetic Calorimeter in LHC Run2 [PDF]

EPJ Web of Conferences, 2020
Many physics analyses using the Compact Muon Solenoid (CMS) detector at the LHC require accurate, high resolution electron and photon energy measurements.
Cavallari Francesca, Rovelli Chiara
doaj   +1 more source

Radiative corrections to very high energy electron-proton scattering

Nuclear Physics B, 1981
Abstract A “leading log” analysis of radiative corrections to inclusive ep scattering at HERA energies is presented. Neutral current weak interactions are considered at the level of the Born cross section as well as of the modifications of vertex and vacuum polarization parts.
M. Consoli, GRECO, Mario
openaire   +2 more sources

Ionization Loss near the Origin of an Electron Pair of Very High Energy [PDF]

Progress of Theoretical Physics, 1957
Ionization loss of negatron-positron pair is calculated as a function of their distance. This resudt will be usefud to measure the energy of a gamma ray above 10/sup 10/ ev from the reduction of ionization near the origin of the created pair. The reduction is due to the interference between the electromagnetic field of negatron and that of positron.
Mito, Iwao, Ezawa, Hiroshi
openaire   +1 more source

Density and temperature of energetic electrons in the Earth's magnetotail derived from high-latitude GPS observations during the declining phase of the solar cycle [PDF]

, 2011
Single relativistic-Maxwellian fits are made to high-latitude GPS-satellite observations of energetic electrons for the period January 2006-November 2010; a constellation of 12 GPS space vehicles provides the observations. The derived fit parameters (for
Denton, Michael, Cayton, T. E., T. E. Cayton, M. H. Denton   +3 more
core   +1 more source

DIFFUSE HARD X-RAY EMISSION IN STARBURST GALAXIES AS SYNCHROTRON FROM VERY HIGH ENERGY ELECTRONS [PDF]

, 2010
The origin of the diffuse hard X-ray (2–10 keV) emission from starburst galaxies is a long-standing problem. We suggest that synchrotron emission of 10–100 TeV electrons and positrons (e±) can contribute to this emission, because starbursts have strong ...
B. Lacki, T. Thompson
semanticscholar   +1 more source