Experimental and calculated LET distributions in the Cosmos-2044 biosatellite orbit
Technical Report
·
OSTI ID:64256
- Research Center of Space Craft Radiation Safety, Moscow (Russian Federation)
During the flight of the Cosmos-2044 biosatellite, joint U.S.S.R.-U.S.A. investigations of different characteristics of cosmic radiation (CR) in the near-Earth environment were carried out. The U.S. dielectric track detectors CR-39 and Soviet BYa- and BR-type nuclear photo-emulsions were used as detectors. The present work shows some results of experimental measurements of linear energy transfer (LET) spectra of CR particles obtained with the use of these detectors, which were placed both inside and outside the satellite. The LET spectra measurements with plastic detectors is composed of two parts: the measurement of galactic cosmos rays (GCR) particles, and of short-range particles. The contributions of these components to the total LET distribution at various thicknesses of the shielding were analyzed and the results of these studies are presented. Calculated LET spectra in the Cosmos-2044 orbit were compared with experimental data. On the basis of experimental and calculated values of the LET spectra, absorbed and equivalent CR doses were calculated. In the shielding range of 1-1.5 g cm{sup {minus}2}, outside the spacecraft, the photo-emulsions yielded 10.3 mrad d{sup {minus}1} and 13.4 mrem d{sup {minus}1} (LET greater than or equal to 40 MeV cm{sup {minus}1}). Inside the spacecraft (greater than or equal to 10 g cm{sup {minus}2}) the photo-emulsions yielded 8.9 mrad d{sup {minus}1} and 14.5 mrem d{sup {minus}1}.
- Research Organization:
- San Francisco Univ., CA (United States)
- OSTI ID:
- 64256
- Report Number(s):
- N--95-25911; NASA-CR--197694; NAS--1.26:197694; CNN: NCC2-521
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cosmic ray LET spectra and doses on board Cosmos-2044 biosatellite
Cosmic ray particles with different LET values under various thicknesses of shielding in low altitude orbits: Calculations and Cosmos-2044 measurements
Linear Energy Transfer (LET) spectra of cosmic radiation in low Earth orbit
Technical Report
·
Tue Feb 28 23:00:00 EST 1995
·
OSTI ID:64257
Cosmic ray particles with different LET values under various thicknesses of shielding in low altitude orbits: Calculations and Cosmos-2044 measurements
Technical Report
·
Tue Feb 28 23:00:00 EST 1995
·
OSTI ID:64258
Linear Energy Transfer (LET) spectra of cosmic radiation in low Earth orbit
Technical Report
·
Tue Feb 28 23:00:00 EST 1995
·
OSTI ID:64254