Accession Number : AD0607406

Title :   SHIELDING REQUIREMENTS FOR RADIATION BELT PARTICLES,

Corporate Author : BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s) : Noyes,J. C. ; Brown,W. D.

Report Date : JAN 1960

Pagination or Media Count : 12

Abstract : The proton energy spectrum in the heart of the inner radiation belt is presented, based on experimental data. The degraded spectra resulting from the attenuation of the incident protons by 5, 10 and 20 gm/sq cm of polyethylene are calculated. The air dose rate due to the degraded protons is given as a function of polyethylene shielding thickness. Air dose rates range from 54 r/hr for no shielding to 2 r/hr for 20 gm/sq cm shielding. The bremsstrahlung due to inner-belt electrons is estimated. The dose rate contribution due to bremsstrahlung is considerably less than that due to protons. (Author)

Descriptors :   (*VAN ALLEN RADIATION BELT, SHIELDING), (*SHIELDING, VAN ALLEN RADIATION BELT), (*SPACECRAFT, SHIELDING), PROTONS, ATTENUATION, POLYETHYLENE PLASTICS, THICKNESS, DOSE RATE, ELECTRONS, BREMSSTRAHLUNG

Distribution Statement : APPROVED FOR PUBLIC RELEASE