| 太阳质子通量模型研究 |
| |
| 引用本文： | 李婷婷,师立勤,刘四清.太阳质子通量模型研究[J].空间科学学报,2010,30(3). |
| |
| 作者姓名： | 李婷婷 师立勤 刘四清 |
| |
| 作者单位： | 1. 中国科学院空间科学与应用研究中心,北京,100190;中国科学院研究生院
2. 中国科学院空间科学与应用研究中心,北京,100190 |
| |
| 基金项目： | 国家重点基础研究发展规划(973计划)，中国科学院知识创新工程共同资助 |
| |
| 摘 要： | 太阳质子事件对航天活动构成重要威胁,预测一定时期内太阳质子通量对航天器抗辐射加固设计有重要的指导意义.在第20至23太阳活动周的太阳质子事件数据统计分析的基础上,建立了一个针对E10 MeV和E30MeV太阳质子通量的新模型.新模型与目前航天工程中常用的JPL模型相比较,引入了太阳活动性对质子事件发生概率的影响因素,能够评估不同太阳活动水平下的质子通量,其结果更符合质子事件的分布特征.
|
| 关 键 词： | 太阳质子事件 质子通量 预报模型 |
Research on the Solar Proton Fluence Model |
| |
| LI Tingting,SHI Liqin,LIU Siqing.Research on the Solar Proton Fluence Model[J].Chinese Journal of Space Science,2010,30(3). |
| |
| Authors: | LI Tingting SHI Liqin LIU Siqing |
| |
| Abstract: | Solar Proton Event (SPE) has great influence on the human space activities. Establishing prediction model for total fluence of solar protons accumulated during a mission and taking protective measures are of vital significance for the security of the spacecraft and astronauts. Based on a data set of proton events from the last four solar cycles, a new statistical model is designed to predict the proton fluence for space mission analysis. The energy ranges considered are E > 10 MeV and E > 30 MeV, respectively. Because of the quasi-random nature of the occurrences, and spectra of SPE, solar proton mission fluence must be treated statistically. The purpose of this analysis is to derive the probability of exceeding various proton fluence as a function of proton energy and mission duration. Compared with commonly used JPL model, solar activity levels are taken into account to obtain the occurrence probability of proton events. The new model can access proton fluence in different phase, and is more consistent with the distribution of proton events. |
| |
| Keywords: | Solar Proton Event (SPE) Solar proton fluence Prediction model |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
