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Solar modulation of the GCR flux and dose rate, observed in space between 1991 and 2019.
Life Sciences in Space Research ( IF 2.5 ) Pub Date : 2020-06-10 , DOI: 10.1016/j.lssr.2020.06.002
Tsvetan P Dachev 1 , Borislav T Tomov 1 , Yuri N Matviichuk 1 , Plamen G Dimitrov 1 , Jordanka V Semkova 1 , Rositsa T Koleva 1 , Malina M Jordanova 1 , Nikolay G Bankov 1 , Viacheslav A Shurshakov 2 , Victor V Benghin 2
Affiliation  

The paper presents the solar modulation of the long-term galactic cosmic rays (GCR) flux and dose rates variations, observed during 14 space experiments by 10 Bulgarian build Liulin-type spectrometers (LTS) (Dachev et al., 2015a). They worked in near Earth space and in the interplanetary radiation environment between January 1991 and January 2019. Data were collected by LTS in the low Earth orbit (LEO) in the L range between 4 and 6.2 or outside the magnetosphere. The major advantage of the data sets are that they are obtained by the electronically identical LTS. The Liulin measurements of about monthly averaged flux and dose rate data are compared with the monthly values of the modulation parameter, reconstructed from the ground based cosmic ray data (Usoskin et al., 2017). A good correlation between the two data sets is observed. The most important achievement of the paper is that for the first time a proof of the solar modulation of the long-term variations of the monthly averaged dose rates is obtained. These long-term experimentally obtained dose rate data could be used for modeling of the GCR space radiation risks to humans in the near Earth radiation environment. Parallel to the long-term dose rate varitions, the monthly averaged flux variations are also presented.



中文翻译:

1991年至2019年在太空中观察到的GCR通量和剂量率的太阳调制。

本文介绍了长期的银河系宇宙射线(GCR)通量和剂量率变化的太阳调制,这是由10个保加利亚建造的柳林型光谱仪(LTS)在14个空间实验中观察到的(Dachev等人,2015a)。他们在1991年1月至2019年1月之间在地球附近空间和行星际辐射环境中工作。LTS收集了L范围在4到6.2之间的低地球轨道(LEO)或磁层以外的数据。数据集的主要优点是它们是通过电子上相同的LTS获得的。将柳林大约每月平均通量和剂量率数据的测量结果与调制参数的每月值进行比较,该调制参数是从基于地面的宇宙射线数据重构而来的(Usoskin et al。,2017)。观察到两个数据集之间的良好相关性。该论文最重要的成就是,首次获得了月平均剂量率长期变化的太阳调制证据。这些长期实验获得的剂量率数据可用于模拟GCR空间辐射在近地辐射环境中对人类的危害。与长期剂量率变化平行,还显示了月平均通量变化。

更新日期:2020-06-10
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