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High-energy neutron spectroscopy with thick silicon detectorsThe high-energy neutron component of the space radiation environment in thick structures such as the International Space Station contributes to the total radiation dose received by an astronaut. Detector design constraints such as size and mass have limited the energy range of neutron spectrum measurements in orbit to about 12 MeV in Space Shuttle studies. We present a new method for high-energy neutron spectroscopy using small silicon detectors that can extend these measurements to more than 500 MeV. The methodology is based on measurement of the detector response function for high-energy neutrons and inversion of this response function with measured deposition data to deduce neutron energy spectra. We also present the results of an initial shielding study performed with the thick silicon detector system for high-energy neutrons incident on polyethylene.
Document ID
20040087896
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kinnison, James D.
(The Johns Hopkins University Applied Physics Laboratory Laurel, Maryland 20723, United States)
Maurer, Richard H.
Roth, David R.
Haight, Robert C.
Date Acquired
August 21, 2013
Publication Date
February 1, 2003
Publication Information
Publication: Radiation research
Volume: 159
Issue: 2
ISSN: 0033-7587
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Radiation Health

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