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Gamma Rays from N15(p, αγ)C12 and N15(p, γ)O16

Kraus, Alfred A., Jr. (1954) Gamma Rays from N15(p, αγ)C12 and N15(p, γ)O16. Physical Review, 94 (4). pp. 975-976. ISSN 0031-899X. doi:10.1103/PhysRev.94.975.

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A new resonance in the reaction N15(p, αγ)C12 giving the 4.43-Mev γ ray from the first excited state of C12 has been found at a proton energy of 1.64±0.03 Mev. The angular distribution of the γ rays indicates that the resonant state in the compound nucleus O16 at an excitation energy of 13.65 Mev has spin and parity equal to 1+ or 2-. The resonance at 1.05-Mev proton energy has been reinvestigated. At this resonance the capture γ rays from the reaction N15(p, γ)O16 are found to be isotropic, which indicates that this 13.09-Mev level of O16 has spin equal to 1. A search was made for capture γ rays at the 0.340-Mev resonance of N15(p, α)C12 but there were less than 1 percent of the number at the 1.05-Mev resonance. Therefore, it seems that these two levels do not have identical spin, parity, and isotopic spin values.

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Additional Information:©1954 The American Physical Society. Received 1 February 1954. The author would like to thank C.A. Barnes, R.F. Christy, W.A. Fowler, C.C. Lauritsen, and R.J. Mackin, Jr., for many valuable discussions during the course of this work. This work was supported by the joint program of the U.S. Office of Naval Research and the U.S. Atomic Energy Commission. [A.A.K., Jr., was a] G.E. Fellow in Physics, 1952-1953 academic year.
Issue or Number:4
Record Number:CaltechAUTHORS:KRApr54b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9961
Deposited By: Archive Administrator
Deposited On:28 Mar 2008
Last Modified:08 Nov 2021 21:03

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