O'Brien Keran, Felsberger Ernst, Kindl Peter
Department of Physics and Astronomy, Northern Arizona University, P.O. Box 6010, Flagstaff, AZ 86011-6010, USA.
Radiat Prot Dosimetry. 2005;116(1-4 Pt 2):336-42. doi: 10.1093/rpd/nci090.
The heliocentric potential is the result of a steady-state solution to the diffusion equation of cosmic rays through the solar wind. The counting rate of any high-latitude, ground-level neutron monitor can be used to determine this potential, which will return cosmic ray spectra in real time. These spectra are routinely used to determine the radiation dose rate to which air crew are exposed during the precise hours of a flight, including the effects of quick decreases and Forbush decreases. Further, it has been used in an effort to calculate the radiation dose rate to air crew during an energetic solar particle event, as the cosmic ray background before the event must be determined. An alternate approach is to use the deceleration potential, which assumes a significant time-dependence of cosmic rays through the heliosphere. However, the theory behind it does not account for the behaviour of ground-level neutron monitors.
日心势是宇宙射线通过太阳风的扩散方程的稳态解的结果。任何高纬度地面中子监测器的计数率都可用于确定该势，它将实时返回宇宙射线能谱。这些能谱通常用于确定机组人员在飞行精确时段所遭受的辐射剂量率，包括快速下降和福布什下降的影响。此外，它还被用于计算高能太阳粒子事件期间机组人员的辐射剂量率，因为必须确定事件发生前的宇宙射线背景。另一种方法是使用减速势，它假定宇宙射线通过日球层具有显著的时间依赖性。然而，其背后的理论并未考虑地面中子监测器的行为。
