Calculations of neutron flux spectra induced in the Earth's atmosphere by galactic cosmic rays
Calculations of neutron flux spectra induced in the Earth's atmosphere by galactic cosmic rays
复制标题
DOI：
10.1029/ja078i016p02715
复制
发表时间：
1973-06
影响因子：
--
通讯作者：
T. W. Armstrong;K. C. Chandler;J. Barish
中科院分区：
文献类型：
--
作者：
T. W. Armstrong;K. C. Chandler;J. Barish
计算了地磁纬度42°N时太阳活动极小期银河质子和α粒子在地球大气中引起的中子通量。用蒙特卡罗和离散坐标方法计算了在大气中不同深度处能量范围为100 - 8到105 Mev的中子通量谱，并与实验数据进行了各种比较。在特定的纬度考虑的计算的中子泄漏谱的大小和形状支持的理论，宇宙射线的中子衰变（Crand）机制是被困在内辐射带的质子的来源。
Calculations have been carried out to determine the neutron flux induced in the earth's atmosphere by galactic protons and alpha particles at solar minimum for a geomagnetic latitude of 42°N. Neutron flux spectra in the energy range ∼10−8 to ∼105 Mev at various depths in the atmosphere were calculated by using Monte Carlo and discrete ordinates methods, and various comparisons with experimental data are presented. The magnitude and shape of the calculated neutron leakage spectrum at the particular latitude considered support the theory that the cosmic ray albedo neutron decay (Crand) mechanism is the source of the protons trapped in the inner radiation belt.