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Study of Some ( p , n ) Reactions by Neutron Time of Flight

Study of Some ( p , n ) Reactions by Neutron Time of Flight A millimicrosecond time-of-flight technique has been applied to the study of ( p , n ) reactions in K, Ca 48 , Ti, Cr, Mn, Fe, Cu, As, and Rb using the phase-focused 3-Mev proton beam from a small fixed-frequency cyclotron. The neutron spectra, resulting from these reactions, gave data from which the ground-state Q values and some of the energy levels in the residual nuclei have been determined. The reactions in K and Fe yielded only one neutron group each, which corresponded to the ground states in Ca 41 and Co 57 , respectively. In addition to the ground state Q values, the energies were determined for one excited state in each of the nuclei Mn 53 , Mn 54 , and Sr 85 , two excited states in Zn 65 , three excited states in Sr 87 , and four excited states in each of the nuclei Sc 48 , V 49 , Fe 55 , and Se 75 . The angular distributions of the neutron groups were observed to be essentially isotropic in the Ca 48 ( p , n ) Sc 48 and Cu 65 ( p , n ) Zn 65 reactions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

Study of Some ( p , n ) Reactions by Neutron Time of Flight

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1958 The American Physical Society
ISSN
1536-6065
DOI
10.1103/PhysRev.112.1200
Publisher site
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Abstract

A millimicrosecond time-of-flight technique has been applied to the study of ( p , n ) reactions in K, Ca 48 , Ti, Cr, Mn, Fe, Cu, As, and Rb using the phase-focused 3-Mev proton beam from a small fixed-frequency cyclotron. The neutron spectra, resulting from these reactions, gave data from which the ground-state Q values and some of the energy levels in the residual nuclei have been determined. The reactions in K and Fe yielded only one neutron group each, which corresponded to the ground states in Ca 41 and Co 57 , respectively. In addition to the ground state Q values, the energies were determined for one excited state in each of the nuclei Mn 53 , Mn 54 , and Sr 85 , two excited states in Zn 65 , three excited states in Sr 87 , and four excited states in each of the nuclei Sc 48 , V 49 , Fe 55 , and Se 75 . The angular distributions of the neutron groups were observed to be essentially isotropic in the Ca 48 ( p , n ) Sc 48 and Cu 65 ( p , n ) Zn 65 reactions.

Journal

Physical Review – American Physical Society (APS)

Published: Nov 15, 1958

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