Some Features of the Formation of an Absorbed Dose behind Thin Shields in the Earth’s Radiation Belts

Some Features of the Formation of an Absorbed Dose behind Thin Shields in the Earth’s Radiation Belts Научная публикация

Журнал

Cosmic Research
ISSN: 0010-9525 , E-ISSN: 1608-3075

Вых. Данные

Год: 2025, Том: 63, Номер: 4, Номер статьи : 1, Страниц : 10 DOI: 10.1134/s0010952525601471

Ключевые слова

поглощенные дозы, геомагнитные возмущения, радиационные пояса Земли

Авторы

Mitrikas V.G.

Организации

1	Institute of Medical and Biological Problems of the Russian Academy of Sciences

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации

FMFR-2024-0036

Abstract—In this paper, the correlation of the electron doses of the Earth’s radiation belts in low near-Earth orbit behind a small shield with the average indicators of the state of the Earth’s magnetosphere during peri- ods of geomagnetic disturbances is shown and analyzed. The results of the Expose-R2 experiment on the ISS and DEPRON experiment on the Lomonosov satellite (Skobeltsyn Institute of Nuclear Physics, Moscow State University) are considered. In the Expose-R2 experiment on the ISS, the absorbed dose behind the shield at 0.6 g cm–2 was measured every 10 s. In the DEPRON experiment, the absorbed dose behind the shield at 0.45 and 0.81 g cm–2 was measured every second. Due to the large number of measurement gaps in the DEPRON experiment, a procedure for restoring the experimental data is proposed. Based on the data obtained, correlations between the average daily absorbed dose rate and various cosmophysical indices in fixed ranges of L-coordinate variations (the McIlwain parameter, at the geomagnetic equator equal to the dis- tance to the Earth’s center in Earth radii) are considered. It is shown that, after geomagnetic disturbances, the linear regression coefficients between the absorbed dose rate and the considered geophysical indices have a uniform dependence on the L-coordinate. For magnetic storms with Dst < 100 nT, the dependences of the linear regression coefficients on the L-coordinate are well approximated by a normal distribution up to L = 4.7. Average value of the maximum position Lav = 4.10 ± 0.15, and standard deviation  = 0.40 ± 0.07. For magnetic storms with Dst > 100 nT, the distribution maximum shifts to Lav = 3.0 and  = 0.22.

Mitrikas V.G.
Some Features of the Formation of an Absorbed Dose behind Thin Shields in the Earth’s Radiation Belts
Cosmic Research. 2025. V.63. N4. 1 :1-10. DOI: 10.1134/s0010952525601471 OpenAlex

Поступила в редакцию:	4 дек. 2024 г.
Принята к публикации:	29 янв. 2025 г.
Опубликована в печати:	1 авг. 2025 г.

OpenAlex:

W4414327541

Пока нет цитирований