Shielding against galactic cosmic rays.

W Schimmerling; J W Wilson; J E Nealy; S A Thibeault; F A Cucinotta; J L Shinn; M Kim; R Kiefer

doi:10.1016/0273-1177(95)00509-d

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PubMed · 11540368

Shielding against galactic cosmic rays.

W Schimmerling·J W Wilson·J E Nealy·S A Thibeault·F A Cucinotta·J L Shinn·M Kim·R Kiefer

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Abstract

Ions of galactic origin are modified but not attenuated by the presence of shielding materials. Indeed, the number of particles and the absorbed energy behind most shield materials increases as a function of shield thickness. The modification of the galactic cosmic ray composition upon interaction with shielding is the only effective means of providing astronaut protection. This modification is intimately connected with the shield transport properties and is a strong function of shield composition. The systematic behavior of the shield properties in terms of microscopic energy absorption events will be discussed. The shield effectiveness is examined with respect to conventional protection practice and in terms of a biological endpoint: the efficiency for reduction of the probability of transformation of shielded C3H10T1/2 mouse cells. The relative advantage of developing new shielding technologies is discussed in terms of a shield performance as related to biological effect and the resulting uncertainty in estimating astronaut risk.

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Aluminum Animals Astronauts Cell Transformation, Neoplastic Cells, Cultured Cosmic Radiation DNA Repair Dose-Response Relationship, Radiation Fibroblasts Humans Linear Energy Transfer Mice Radiation Dosage Radiation Protection Risk Space Flight NASA Center HQS NASA Discipline Radiation Health Journal Article

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W Schimmerling, J W Wilson, J E Nealy, S A Thibeault, F A Cucinotta, J L Shinn, M Kim, R Kiefer. 1996. Shielding against galactic cosmic rays.. https://doi.org/10.1016/0273-1177(95)00509-d

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