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Neutrons and Gamma Rays from the Alpha-Particle Bombardment of Be9, B10, B11, C13, and O18

Bonner, T. W. and Kraus, Alfred A., Jr. and Marion, J. B. and Schiffer, J. P. (1956) Neutrons and Gamma Rays from the Alpha-Particle Bombardment of Be9, B10, B11, C13, and O18. Physical Review, 102 (5). pp. 1348-1354. ISSN 0031-899X. http://resolver.caltech.edu/CaltechAUTHORS:BONpr56b

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Abstract

Excitation curves at 0° and 90° were studied for neutrons and γ rays produced in bombardment of thin targets of Be9, B10, B11, C13, and O18 by α particles with energies of from 1.8 to 5.3 Mev. Resonances were observed in the Be9(α, n)C12 reaction at bombarding energies of 1.9, 2.3, 2.6, 3.98, 4.4, and 5.0 Mev. The C13(α, n)O16 reaction showed resonances at 2.09, 2.25, 2.42, 2.605, 2.69, 2.775, 2.825, 3.09, 3.33, 3.42, 3.67, 3.73, 4.125, 4.42, 4.50, 4.63, 4.75, and 5.05 Mev. The B10(α, n)N13 excitation curve has resonances at 2.16, 2.25, 2.90, 4.53, 4.85, and 5.36 Mev, while the γ-ray yield from the B10(α, pγ)C13 reaction showed all these as well as resonances at 3.6 and 3.95 Mev. The B11(α, n)C13 reaction has resonances at bombarding energies of 2.06, 2.60, 2.93, 2.97, 3.23, 3.54, 3.72, 3.92, 4.25, 4.34, and 5.00 Mev. The O18(α, n)Ne21 reaction was studied with a thicker target (90-130 kev). Resonances in the neutron yield were resolved at 2.21, 2.47, 2.57, 2.72, 2.94, 3.24, 3.63, 3.91, 4.12, 4.22, 4.33, 4.52, and 4.82 Mev. Cross sections and widths of the resonances in the various reactions were determined.


Item Type:Article
Additional Information:©1956 The American Physical Society. Received 20 February 1956. Supported in part by the U.S. Atomic Energy Commission.
Record Number:CaltechAUTHORS:BONpr56b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BONpr56b
Alternative URL:http://dx.doi.org/10.1103/PhysRev.102.1348
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9964
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:28 Mar 2008
Last Modified:26 Dec 2012 09:55

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