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Low-energy behavior of the ^3He(α, γ)^7Be cross section

Osborne, J. L. and Barnes, C. A. and Kavanagh, R. W. and Kremer, R. M. and Mathews, G. J. and Zyskind, J. L. and Parker, P. D. and Howard, A. J. (1984) Low-energy behavior of the ^3He(α, γ)^7Be cross section. Nuclear Physics A, 419 (1). pp. 115-132. ISSN 0375-9474. doi:10.1016/0375-9474(84)90288-4.

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Cross sections for the ^3He(α, γ)^7Be reaction have been measured at several energies from E_(c.m.) = 165 to 1169 keV by counting prompt γ-rays from a windowless, differentially pumped, recirculating, ^3He gas target. The cross-section factor S_(34)(E_(c.m.)) and branching ratio γ_1/γ_0 were determined at each energy. Cross sections were also measured at E_(c.m.) = 947 and 1255 keV by counting the γ-rays from the ^7Be produced in a ^3He gas cell with a Ni entrance foil. Combining the results of these two independent experiments yields a zero-energy intercept for the cross-section factor of S_(34)(0) = 0.53 ± 0.03 keV · b. The relationship between these measurements and several theoretical calculations, and the import of the extrapolated cross section for the solar-neutrino problem are discussed.

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Additional Information:© 1984 North-Holland Publishing Company. Received 27 September 1983. The authors wish to thank Professor William A. Fov.ler for his encouragement and guidance throughout these experiments. This work was supported in part by the National Science Foundation under grant no. PHY79-23638.
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Subject Keywords:Nuclear reactions
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Official Citation:J.L. Osborne, C.A. Barnes, R.W. Kavanagh, R.M. Kremer, G.J. Mathews, J.L. Zyskind, P.D. Parker, A.J. Howard, Low-energy behavior of the 3He(α, γ)7Be cross section, Nuclear Physics A, Volume 419, Issue 1, 30 April 1984, Pages 115-132, ISSN 0375-9474, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60144
Deposited By: Ruth Sustaita
Deposited On:11 Sep 2015 18:33
Last Modified:10 Nov 2021 22:30

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