Space radiation dosimetry
- Armed Forces Radiobiology Research Inst., Bethesda, MD (United States)
Dosimetry is the measurement of the energy deposited in matter by various forms of radiation. In space the radiation is primarily energetic electrons, protons and heavier ions from planetary radiation belts, solar flares, and interstellar cosmic rays. Experimentally, dose is frequently obtained by summing the individual energy deposits in a solid state detector. If the detector is calibrated and the sensitive mass is known, the energy sum can be converted directly to accumulated radiation dose in Gy (J/kg). Such detectors can also be used to provide an approximate separation of dose into the components due to electrons, protons, and heavier ions, which is useful if it is desired to convert the measured dose into a biological effective dose (Sv) for manned spaceflight purposes. The output can also be used to provide an essentially instantaneous dose rate for use as warning devices. This is the primary type of space radiation dosimeter to be discussed here. The MOS-type dosimeter is another solid state sensor which can be of small size and low power. These devices integrate the total dose once through, can not separate particle types, and are not suitable for instantaneous dose rate measurement at low levels. There are several additional methods of measuring space radiation dose using scintillators, etc., but are not discussed in detail. In this paper emphasis is given to descriptions of active solid state detector instruments which have successfully worked in space. Some results of in-orbit dose measurements are presented.
- OSTI ID:
- 79446
- Report Number(s):
- CONF-9110312-; TRN: 9581439
- Resource Relation:
- Conference: NATO Advanced Studies Institute on the biological effects and physics of solar and galactic cosmic radiation conference, Faro (Portugal), 13-22 Oct 1991; Other Information: PBD: 1993; Related Information: Is Part Of Biological effects and physics of solar and galactic cosmic radiation, Part B; Proceedings of a NATO Advanced Study Institute on Biological Effects and Physics of Solar and Galactic Cosmic Radiation, Algarve, Portugal, Oct. 13-23, 1991; Swenberg, C.E.; Horneck, G.; Stassinopoulos, E.G.; PB: 939 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
The alanine detector in BNCT dosimetry: Dose response in thermal and epithermal neutron fields
Direct dose to water dosimetry for pretreatment IMRT verification using a modified EPID