Simulation of GRIS spectrometer response to the solar gamma-ray flare of 23 July 2002

International Conference on Particle Physics and Astrophysics

物理学;天文学

Trofimov, Yu.A.^1 ; Kotov, Yu.D.^1 ; Yurov, V.N.^1 ; Lupar, E.E.^1 ; Faradzhaev, R.M.^1 ; Glyanenko, A.S.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^1

关键词: Cosmic background radiation;    Counting rates;    Energy ranges;    Energy resolutions;    Hard X ray;    Low energy thresholds;    Solar flare;    Solar neutrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012124/pdf
DOI  :  10.1088/1742-6596/798/1/012124

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

GRIS is a prospective experiment designed to measure hard X-rays and γ-rays of solar flares in the energy range from 50 keV to 200 MeV as well as solar neutrons > 30 MeV. This study considers results of GEANT 4 simulation of GRIS detectors response to cosmic background radiation and to the solar flare SOL2002-07-23 (X4.8). It is shown that the GRIS spectrometers have enough sensitivity and energy resolution to measure redshifts of some narrow γ-rays in flare spectra, that the low energy thresholds of the detectors can be lowered considerably without a risk of counting rate saturation during high magnitude flares and that at a choice between LaBr3(Ce) and CeBr3the second one is a preferable scintillator for a hard X-ray and γ-ray spectrometer of solar flares.