DOSIMETRY OF PROTON RADIATION IN SPACE
Abstract
The energy spectra of the proton radiation in the inner Van Allen Belt and of the proton flux after large solar flares are selected as representative examples for an analysis of the intratarget distribution of the RBE dose in r m. It is shown that greatly different depth doses ranging from 0.6 per cent to 64 per cent of the surface dose are obtained depending on types of spectrum and shielding thicknesses. Because of this extreme variation in the depth dose pattern, a concise and general determination of the total body radiation burden seems impossible. Mitigating is the fact t at, due to the comparatively small share of low energy particles in the local spectrum, the mean RBE never exceeds the value 1.5. This distinguishes proton beams in space from neutron-produced recoil protons of reactors which are exclusively of low energy and have a mean RBE of 10.0. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 06, 1961
- Accession Number
- AD0261696
Entities
People
- Hermann J. Schaefer