Measurements and calculations of the electron recoil spectra from gamma rays emitted by nitrogen for a 14-MeV neutron source
The electron recoil spectra from gamma rays produced by the interaction of 14-MeV neutrons with 0.5, 1.0, 3.0, and 7.0 mean-free-paths (mfps) of nitrogen have been measured with NE-213 scintillators positioned at 26, 30, and 120 deg at distances ranging between 7 and 10 m. Thin wall spherical Dewars filled with liquid nitrogen, with radii dimensions equivalent to the above number of mfp, were bombarded with a centered nominal 14-MeV neutron source. Calculations of the gamma and recoil electron spectra have been carried out with the ENDF/B-IV and ENDL neutron-gamma libraries. Comparison between the measured and calculated electron recoil spectra shows that the discrepancies are not larger than 10%. This agreement implies that the calculated gamma-ray spectra are expected to give a good description of the gamma transport in nitrogen from a 14-MeV neutron source.
- Research Organization:
- Univ. of California, Livermore
- OSTI ID:
- 7218383
- Journal Information:
- Nucl. Sci. Eng.; (United States), Vol. 62:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NEUTRON TRANSPORT
ELECTRON SPECTRA
NITROGEN
GAMMA RADIATION
GAMMA SPECTRA
LIQUIDS
RECOILS
CRYOGENIC FLUIDS
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
IONIZING RADIATIONS
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
RADIATION TRANSPORT
RADIATIONS
SPECTRA
654003* - Radiation & Shielding Physics- Neutron Interactions with Matter