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GAMMA RADIATIONS FROM INELASTIC SCATTERING OF FAST NEUTRONS IN C$sup 12$, N$sup 14$, AND O$sup 1$$sup 6$

Journal Article · · Nuclear Phys.
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Measurements were made of the cross section for the production of 4 43- Mev gamma -radiation by the inelastic scattering of neutrons by C/sup 12/. The experiments were carried out using monoenergetic neutrons with energies from 4.6 to 9.8 Mev. Ten resonances were observed in this energy range and the maximum cross section of 45 mb/sterad was obtained at a neutron-energy of 8.1 Mev. Measurements made with an O/sup 16/ scatterer also showed many resonances for the production of gamma -radiation with energies of 6.14. 6.91. and 7 12 Mev. The maximum cross section for gamma -emission was obtained with 9.1-Mev neutrons and amounted to 30 mb/sterad Population of the 6.06-Mev pair emitting state in O/sup 16/ was not observed and an upper limit on the probabily of exciting this state was less than 10% of that for the excitation of the gamma emitting states. gamma radiations from the interaction of fast neutrons in N/sup 14/ were observed with neutrons of energies from 4.7 to 8.1 Mev. Gamma radiations with energies of 1.64, 2 14, half of the cross section for the production of radiation is from the N/sup 14/(n. alpha )B/sup 11/* reaction and the rest is from inelastic scattering in N/sup 14/. At a neutron energy- of 7.3 Mev the cross section fur the N/sup 14/(n.n' gamma )N/sup 14/reaction. including cascades is 16.2 mb/sterad and the cross section of the N/sup 14/(n, alpha )B/sup 11*/ reaction leading in the first three excited states is 10.7 mb/sterad (auth)

Research Organization:
Rice Inst., Houston, Tex.
NSA Number:
NSA-14-008103
OSTI ID:
4183276
Journal Information:
Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 14
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ALPHA PARTICLES-- BORON 11-- CROSS SECTIONS-- EMISSION-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- FAST NEUTRONS-- GAMMA RADIATION-- INELASTIC SCATTERING-- MEASURED VALUES-- NUCLEAR REACTIONS-- PRODUCTION-- RESONANCE-- SCATTERING
CARBON 12-- CROSS SECTIONS-- EMISSION-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- FAST NEUTRONS-- GAMMA RADIATION-- INELASTIC SCATTERING-- MEASURED VALUES-- NUCLEAR REACTIONS-- PRODUCTION-- RESONANCE-- SCATTERING
CROSS SECTIONS-- EMISSION-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- FAST NEUTRONS-- GAMMA RADIATION-- INELASTIC SCATTERING-- MEASURED VALUES-- NUCLEAR REACTIONS-- OXYGEN 16-- PRODUCTION-- RESONANCE-- SCATTERIN
PHYSICS