Quantitative Evaluation of Spectra and Intensity of Anomalous Cosmic Rays in Middle Atmosphere

IF 0.3 4区综合性期刊 Q4 MULTIDISCIPLINARY SCIENCES Comptes Rendus De L Academie Bulgare Des Sciences Pub Date : 2023-10-31 DOI:10.7546/crabs.2023.10.08

Peter Velinov, Simeon Asenovski, Lachezar Mateev

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Abstract

The influence of Anomalous Cosmic Rays (ACRs) on ionization in the boundary of the ionosphere-middle atmosphere system (40–50 km) is investigated, taking into account the spectrum, intensity, geomagnetic, and atmospheric cut-offs. The ACR spectra and intensity in the middle atmosphere are determined using the CORSIMA (COsmic Ray Spectra and Intensity in Middle Atmosphere) model. ACR spectra are presented for various atmospheric altitudes within the range of 40–50 km, with the lower boundary of the ionosphere at approximately 50 km. Experimental satellite measurements are utilized for the main ACR constituents, including Hydrogen (protons), Helium, Nitrogen, and Oxygen nuclei. It is found that the influence of ACRs extends to the polar cap regions above 65°–70° geomagnetic latitude, and certain ACR ionization rate values in these regions are comparable to Galactic Cosmic Ray (GCR) ionization rates. Future studies will also consider Multiply Charged Anomalous Cosmic Rays (MCACRs), which exhibit similar differential spectra to the singly ionized ACR components addressed in this study.

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大气中异常宇宙射线光谱和强度的定量评价

研究了异常宇宙射线(ACRs)对电离层-中大气系统边界(40-50 km)电离的影响，考虑了光谱、强度、地磁和大气截止。中间大气中的ACR光谱和强度用 CORSIMA(宇宙射线光谱和中大气强度)模式。ACR光谱在40 ~ 50 km的不同大气高度范围内，电离层下边界约为50 km。实验卫星测量主要的ACR成分，包括氢(质子)、氦、氮和氧核。研究发现，ACR的影响扩展到地磁纬度65°~ 70°以上的极帽区域，这些区域的ACR电离率值与银河宇宙射线(GCR)电离率相当。未来的研究还将考虑多重带电异常宇宙射线(MCACRs)，它与本研究中处理的单电离ACR成分具有相似的微分光谱。

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来源期刊

Comptes Rendus De L Academie Bulgare Des Sciences 综合性期刊-综合性期刊

CiteScore

0.60

自引率

33.30%

发文量

181

审稿时长

3-6 weeks

期刊介绍： Founded in 1948 by academician Georgy Nadjakov, "Comptes rendus de l’Académie bulgare des Sciences" is also known as "Доклади на БАН","Доклады Болгарской академии наук" and "Proceeding of the Bulgarian Academy of Sciences". If applicable, the name of the journal should be abbreviated as follows: C. R. Acad. Bulg. Sci. (according to ISO)