Cosmic radiation measurements on the Foton-M4 satellite by passive detectors

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• 作者：Andrea Strá ; di^a ; ^{stradi.andrea@energia.mta.hu} ; Jó ; zsef K. Pá ; lfalvi^a ; Julianna Szabó ; ^a ; Tamá ; s Pá ; zmá ; ndi^a ; Olga A. Ivanova^b ; Vyacheslav A. Shurshakov^b
• 刊名：Acta Astronautica
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：131
• 期：Complete
• 页码：110-112
• 全文大小：330 K
• 卷排序：131

文摘

The Russian Foton spacecraft was designed to deliver scientific experiments to low Earth orbit and return them safely to the ground for further analysis. During the 44-d Foton-M4 satellite mission in 2014 several passive cosmic ray detectors were exposed outside (in a single holder) and inside (in 4 locations) the recoverable capsule to study the radiation field. The applied thermoluminescent detectors (TLDs) are more sensitive to the particles with LET under 10 keV µm−1, while the solid state nuclear track detectors (SSNTDs) measure the particles having LET over this value. According to our measurements the average internal absorbed dose rate varied between 374−562 μGy/day for low LET radiation and 40−52 μGy/day for high LET radiation. Outside the capsule the dose rate was much higher, 1078 μGy/day for low LET radiation and 75 μGy/day for high LET radiation. Within the paper the obtained absorbed dose rates has been compared to those measured on the previous Foton-M flights, during the Bion-M1 mission and in the Columbus module of the International Space Station.