Physics – Medical Physics
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aipc..186..369s&link_type=abstract
HIGH-ENERGY RADIATION BACKGROUND IN SPACE. AIP Conference Proceedings, Volume 186, pp. 369-380 (1989).
Physics
Medical Physics
Aerospace Bio- And Medical Physics
Scientific paper
The biological effects of high energy, high charge nuclei (HZE particles) occupy a central role in the management of space radiation hazards due to galactic cosmic rays. For the energy range of interest, the mean free path for nuclear interactions of these heavy ions is comparable to the thickness of the material traversed, and a significant fraction of stopping particles will undergo a nuclear reaction with the nuclei of the stopping material. Transport methods for HZE particles are dependent on models of the interaction of man-made systems with the space environment to an even greater extent than methods used for other types of radiation. Hence, there is a major need to validate these transport codes by comparison with experimental data. The basic physical properties of HZE particles will be reviewed and illustrated with the results of nuclear fragmentation experiments performed with 670A MeV neon ions incident on a water absorber and with measurements of multiple Coulomb scattering of uranium beams in copper. Finally, the extent to which physical measurements yield radiobiological predictions is illustrated for the example of neon.
Alpen Edward L.
Deguzman Randy J.
Ludewigt Bernhard
Phillips Mark
Powers-Risius Patricia
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