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THE REACTIONS Li$sup 7$(p,n)Be$sup 7$, B$sup 11$(p,n)C$sup 11$ AND Al$sup 27$(p,n)Si$sup 27$ AT 8 TO 14 Mev

Journal Article · · J. Phys. Soc. Japan
DOI:https://doi.org/10.1143/JPSJ.15.741· OSTI ID:4139699
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The (p,n) reactions for lithium, boron, and aluminum targets were studied using proton-recoil, fast-neutron spectrometers. The angular distributions of Li/sup 7/(p,n)Be/sup 7/ neutrons corresponding to the ground and the 0.43 Mev excited states at 8.1 to 14.1 Mev and corresponding to the 4.65 Mev excited state of Be/sup 7/ at 14.1 Mev were obtained. Using the activation method, the excitation curve of this reaction was observed with a 15 Mev proton beam. The angular distributions of neutrons from the reaction the reactions Al/ sup 27/(p,n)Si/sup 27/ (the ground and the excited states) at 14.1 Mev were also observed. The theory of Austern, Butler, and McManus does not agree with the obtained results in the case of the reaction B/sup 11/(p,n)C/sup 11/ but agrees with that in the reaction Al/sup 27/(p,n)Si/sup 27/. It was observed that, for the reaction B/sup 11/(p,n)C/sup 11/, the isotropic parts of the angular distributions of neutrons became larger as the incident proton energies decreased and, in the cases of the reactions of Li/sup 7/(p,n)Be/sup 7/ and B/sup 11/(p, n)C/sup 1 the angular distributions of neutrons showed large variations for the different proton energies. (auth)

Research Organization:
Tokyo Univ.
Sponsoring Organization:
USDOE
NSA Number:
NSA-14-015290
OSTI ID:
4139699
Journal Information:
J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 15
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ALUMINUM 27-- ANGULAR DISTRIBUTION-- CROSS SECTIONS-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- FAST NEUTRONS-- MEASURED VALUES-- MEV RANGE-- NEUTRON SPECTROMETERS-- NEUTRONS-- NUCLEAR MODELS-- NUCLEAR REACTIONS-- NUCLEAR THEORY-- PROTON BEAMS-- PROTONS-- RECOILS-- SILICON 27-- TARGETS
ANGULAR DISTRIBUTION-- BERYLLIUM 7-- CROSS SECTIONS-- ENERGY-- ENERGY LEVELS-- ENERGY RANGE-- EXCITATION-- FAST NEUTRONS-- LITHIUM 7-- MEASURED VALUES-- MEV RANGE-- NEUTRON SPECTROMETERS-- NEUTRONS-- NUCLEAR MODELS-- NUCLEAR REACTIONS-- NUCLEAR THEORY-- PROTON BEAMS-- PROTONS-- RECOILS-- TARGETS
ANGULAR DISTRIBUTION-- BORON 11-- CARBON 11-- CROSS S
PHYSICS