Operational Radiation Safety Program for Astronauts in by National Council on Radiation Protection and Measurements

By National Council on Radiation Protection and Measurements

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Extra info for Operational Radiation Safety Program for Astronauts in Low-Earth Orbit: A Basic Framework (Ncrp Report)

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2) can identify particles individually by charge and energy. This is necessary information when considering radiation effects that are sensitive to particle type and fluence, as opposed to D and LET. It is also possible to make comparisons between the data and calculations. Particle spectrometers generally have limited angular acceptance and energy, and poor statistics for Z Ͼ 2. Details of properties and performance of both TEPCs and particle spectrometers can be found in Appendices B and C. Thermoluminescent dosimeters (of type TLD-100௡ or TLD-700௡) have been used routinely for both passive personal dosimeters and passive area dosimeters since the Skylab mission.

As a rule, D due to electrons will be insignificant for all but the most thinly shielded locations of an EVA suit. 34 / 4. 1—Summary of locations where radiation measurements are needed, as a function of particle types, for operations in LEO. Trapped electrons Reentrant and albedo electrons Trapped protons (Ͻ10 MeV) Protons and light nuclear particles (Ͼ10 MeV) GCR ions and secondary charged fragments Charged target fragments Neutrons EVA Suit (internal) Spacecraft (external) Spacecraft (internal) X X — X X X — X — X — X X X X X X — X X X 5.

In particular, the Report describes the radiation components 5 This procedure for obtaining E for space radiations differs from that used for terrestrial radiation environments, in that HT (calculated as given above) replaces HT ‫ ס‬wR DT, where wR (for external radiation) is a nominal value based on the type and energy of the radiation incident on the body (ICRP, 1991; NCRP, 1993). The practice of obtaining HT permits more complete consideration of the Q(L) relationship for the complex space radiation environments.

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