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Resonant alpha capture by 7Be and 7Li

Hardie, G. and Filippone, B. W. and Elwyn, A. J. and Wiescher, M. and Segel, R. E. (1984) Resonant alpha capture by 7Be and 7Li. Physical Review C, 29 (4). pp. 1199-1206. ISSN 0556-2813. http://resolver.caltech.edu/CaltechAUTHORS:HARprc84

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Abstract

Resonances at Eα=401,814, and 953 keV were observed in the 7Li(α,γ) reaction. From the thick target yields the corresponding states in 11B at 8920, 9185, and 9274 keV were found to have center-of-mass resonance strengths of 0.0088±0.0014, 0.317±0.047, and 1.72±0.17 eV, respectively. The radiative widths deduced for the latter two states are 0.17-0.03+0.06 and 1.15±0.16 eV, respectively. Using a 40 mCi 7Be target, α-capture resonances were observed at Eα=884 (11C* = 8105 keV) and 1376 (11C* = 8421 keV) keV with center-of-mass resonance strengths of 0.331±0.041 and 3.80±0.57 eV, respectively. The radiative widths deduced for these states are 0.350±0.056 and 3.1±1.3 eV, respectively. The observed decay rates are compared with theoretical calculations.


Item Type:Article
Additional Information:©1984 The American Physical Society. Received 2 December 1983. It is a pleasure to thank W. Ray, Jr., for substantial help during the course of the experiment. The Dynamitron staff is also thanked for assistance with the experiment. This work was supported by the U.S. Department of Energy under Contract No. W-31-109-ENG-38 and the National Science Foundation.
Record Number:CaltechAUTHORS:HARprc84
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HARprc84
Alternative URL:http://dx.doi.org/10.1103/PhysRevC.29.1199
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6495
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Dec 2006
Last Modified:26 Dec 2012 09:21

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