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The dose reduction effects for space radiation by installation of water shielding material (“protective curtain”) of a stack board consisting of the hygienic wipes and towels have been experimentally evaluated in the International Space Station by using passive dosimeters. The averaged water thickness of the protective curtain was 6.3g/cm2. The passive dosimeters consisted of a combination of thermoluminescent...
The source of galactic cosmic rays (GCR) remains unknown, despite many decades of research. It is generally accepted among high-energy astrophysicists that GCR are accelerated by supernova (SN) shocks in the interstellar medium, but the evidence for this remains indirect. However, the fact that the cosmic-ray spectrum continues far past the limit of SN shock acceleration is a serious problem for this...
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