论文标题
蒙特卡洛方法在太阳能颗粒的运输和加速度建模中的应用
Application of the Monte Carlo Method in Modeling Transport and Acceleration of Solar Energetic Particles
论文作者
论文摘要
太阳能粒子（SEP）动力学的定量表征的需求不仅仅是学科。它具有许多与人类活动有关的实际含义。陆地磁场屏蔽了国际空间站（ISS），以及大多数未经接触的任务，从暴露于SEP辐射。但是，具有硬能谱的极端SEP事件特别丰富了数百个MEV，到达可以到达低地轨道（LEO）高度的几个GEV质子。这些质子具有较高的穿透能力，因此对人类太空飞行产生了明显的辐射危害。 SEP对大气也有重大影响。高纬度的高纬度地区突然电离在极地吸收期间发生的高纬度（PCA）事件会阻止高频（HF）通信数小时，从而影响洲际高海拔飞行的飞机的通信。 SEP在大气中的另一个作用是在上层大气中产生NOX分子，可以耗尽大气中的臭氧种群。本文还对（1）分析了（1）各种俯仰角扩散系数如何影响模拟SEPS群体的性质，以及（2）讨论SEP超过1 AU超过1 AU时如何影响地球轨道上的SEP事件衰变相。
The need for quantitative characterization of the solar energetic particle (SEP) dynamics goes beyond being an academic discipline only. It has numerous practical implications related to human activity in space. The terrestrial magnetic field shields the International Space Station (ISS) and most uncrewed missions from exposure to SEP radiation. However, extreme SEP events with hard energy spectra are particularly rich in hundreds of MeV to several GeV protons that can reach the altitudes of the Low Earth Orbit (LEO). These protons have a high penetrating capability, thus producing significant radiation hazards for human spaceflight. SEPs also have a significant effect on the atmosphere. Sudden ionization of the upper atmosphere at high latitudes that occurs during polar cap absorption (PCA) events can block high frequency (HF) communication for hours, affecting communication with aircraft on intercontinental high-altitude flights. Another effect of SEPs in the atmosphere is creating NOx molecules in the upper atmosphere that can deplete the atmospheric ozone population. The paper also presents an analysis of (1) how various pitch angle diffusion coefficient approximations affect the properties of the simulated SEPs population and (2) discusses how pitch angle scattering when SEPs are beyond 1 AU affects a SEP event decay phase at the Earth's orbit.
