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Record 1 of 13836
High-energy neutron spectroscopy with thick silicon detectors
Author and Affiliation:
Kinnison, James D.(The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland 20723, United States)
Maurer, Richard H.
Roth, David R.
Haight, Robert C.
Abstract: The 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.
Publication Date: Feb 01, 2003
Document ID:
20040087896
(Acquired Sep 07, 2004)
Subject Category: LIFE SCIENCES (GENERAL)
Document Type: Journal Article
Publication Information: Radiation research (ISSN 0033-7587); Volume 159; 2; 154-60
Publisher Information: United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FAST NEUTRONS; NEUTRONS; RADIATION MEASUREMENT; SILICON; SPECTROSCOPY; SPECTRUM ANALYSIS; ELEMENTARY PARTICLE INTERACTIONS; EXPERIMENT DESIGN; POLYETHYLENES; RADIATION EFFECTS; SCINTILLATION COUNTERS; SENSITIVITY ANALYSIS
Other Descriptors: FAST NEUTRONS; RADIOMETRY/INSTRUMENTATION/METHODS; SILICON; SPACE FLIGHT; SPECTRUM ANALYSIS/INSTRUMENTATION/METHODS; ELEMENTARY PARTICLE INTERACTIONS; POLYETHYLENE; REPRODUCIBILITY OF RESULTS; RESEARCH DESIGN; SCINTILLATION COUNTING; SENSITIVITY AND SPECIFICITY; SUPPORT, U.S. GOV'T, NON-P.H.S; NASA DISCIPLINE RADIATION HEALTH; NON-NASA CENTER
Availability Source: Other Sources
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