Actions for Helium generation in copper by 14.8-MeV neutrons

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Helium generation in copper by 14.8-MeV neutrons

Author
Holt, J. B.
Published
United States : [publisher not identified], 1975.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1975.
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Hosmer, D. W. and Van Konynenburg, R. A.

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Summary
High purity copper foils were irradiated with 14.8-MeV neutrons from the rotating target neutron source facility at LLL. The average energy of the neutrons was 14.75 +- 0.1 MeV, and the average fluence was 7.0 x 1016 n/ cm2. After irradiation each foil was heated to the melting point and the released helium was measured by a mass spectrometer of special design. Isochronal heating was carried out on several samples to establish the type and temperature of maximum release. Calculated cross sections from the literature for the (eta,alpha) and (eta,eta'alpha) nuclear reactions were used, and the predicted amount of helium was consistently about 0.5 of that actually measured. Because there is very little data on helium generation in metals irradiated with high energy neutrons, these results are important and will be related to potential CTR materials. (auth)
Report Numbers
UCRL-76765; CONF-751026-7
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: W-7405-ENG-48
NSA number: NSA-33-005316
OSTI Identifier 4188962
Research organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
View MARC record | catkey: 47039258