Linear Energy Transfer (LET) spectra of cosmic radiation in low Earth orbit

Technical Report · Wed Mar 01 04:00:00 EST 1995

OSTI ID:64254

Parnell, T A; Watts, Jr, J W; Akopova, A B; Magradze, N V; Dudkin, V E; Kovalev, E E; Potapov, Yu V; Benton, E V; Frank, A L; Benton, E R ^[1]

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1. Academy of Sciences of the Armenian SSR, Erivan, Armenia (Russian Federation)

Integral linear energy transfer (LET) spectra of cosmic radiation (CR) particles were measured on five Cosmos series spacecraft in low Earth orbit (LEO). Particular emphasis is placed on results of the Cosmos 1887 biosatellite which carried a set of joint U.S.S.R.-U.S.A. radiation experiments involving passive detectors that included thermoluminescent detectors (TLD`s), plastic nuclear track detectors (PNTD`s), fission foils, nuclear photo-emulsions, etc. which were located both inside and outside the spacecraft. Measured LET spectra are compared with those theoretically calculated. Results show that there is some dependence of LET spectra on orbital parameters. The results are used to estimate the CR quality factor (QF) for the COSMOS 1887 mission.

• Research Organization: San Francisco Univ., CA (United States)
• OSTI ID: 64254
• Report Number(s): N--95-25911; NASA-CR--197694; NAS--1.26:197694; CNN: NCC2-521; NAG8-071
• Country of Publication: United States
• Language: English

Related Subjects

56 BIOLOGY AND MEDICINE
APPLIED STUDIES
BIOSATELLITES
COSMIC RADIATION
LET
RADIATION DETECTORS
RADIATION DOSES
SPACE FLIGHT
THERMOLUMINESCENCE