Elsevier

Nuclear Physics A

Volume 414, Issue 1, 13 February 1984, Pages 141-150
Nuclear Physics A

Measurement of the 7Be branching ratio

https://doi.org/10.1016/0375-9474(84)90501-3Get rights and content

Abstract

The branching ratio in the electron-capture decay of 7Be to the 478 keV and ground states of 7Li has been measured employing an activation technique. Three 7Li targets were bombarded with a proton beam and the neutrons resulting from the 7Li(p, n)7Be reaction were counted in 4π geometry. After bombardment, the 478 keV γ-activity was determined. To calibrate neutron-detection efficiency, two 89Y targets were bombarded, and the resulting neutrons and ensuing 909 keV γ-activity counted. Comparison of the neutron yields with the γ-activities results in a 7Be branch of (10.49 ± 0.07)% to the 478 keV state of 7Li.

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