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Measurements of gamma-ray production cross sections for shielding materials of space nuclear systemsMeasurements of secondary gamma ray production from neutron interactions have been made over the entire energy range of interest in shielding applications. The epithermal capture gamma ray yields for both resolved gamma ray lines and continuum have been measured from thermal energies to 100 KeV for natural tungsten and U-238, two important candidate shield materials in SNAP reactor systems. Data are presented to illustrate the variation of epithermal capture gamma ray yields with neutron energy. The gamma ray production cross sections from (n,xy) reactions have been measured for Fe and Al from the threshold energies for inelastic scattering to approximately 16 MeV. Typical Fe and Al cross sections obtained with high-neutron energy resolution and averaged over broad neutron-energy groups are presented.
Document ID
19720010015
Document Type
Conference Paper
Authors
Orphan, V. J. (Gulf Radiation Technology San Diego, CA, United States)
John, J. (Gulf Radiation Technology San Diego, CA, United States)
Hoot, C. G. (Gulf Radiation Technology San Diego, CA, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Publication Information
Publication: NASA, Washington Proc. of the Natl. Symp. on Nat. and Manmade Radiation in Space
Subject Category
NUCLEAR ENGINEERING
Funding Number(s)
CONTRACT_GRANT: DASA01-69-C-0083
CONTRACT_GRANT: UC-3032
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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Related Records

IDRelationTitle19720009951Analytic PrimaryProceedings of the National Symposium on Natural and Manmade Radiation in Space