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Brief Introduction to Space Radiation Dosimetry

Rong Chaofan Chen Jun Wang Zhiqiang Liu Yina (China Institute of Atomic Energy, Beijing, 102413)  
Space radiation dosimetry is one of disciplines representing challenge in the sphere of radiation protection. This paper places the emphasis on dealing with (1) the primary sources of space radiation sources at low-Earth orbit (LEO), which include galactic cosmic rays (GCRs), Earth's radiation belt formed by high energy electrons and protons trapped in geomagnetic field, solar particle events and the albedo neutrons and neutrons produced due to interactions between GCRs and Earths's atmoshpere, (2) the relative contributions of various radiation components to ionnizing radiation doses and (3) the methods for measuring space radiation dose, mainly involving active and passive detectors, measuring ranges and their advantages and disadvantages. Also the detectors used currently abroad are reviewed, along with their characteristics and the short hishory of the dosimetry at international level.
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