Precise knowledge of the branching ratio in the alpha decay of 210Po is important for accurate measurement of the 209Bi(n,gamma)210gBi cross-section, the reaction involved in the termination of the astrophysical s-process. The branching ratio was determined from independent measurements of alpha and gamma spectra of bismuth samples simultaneously irradiated by neutrons near the core of the Soreq's research reactor (IRR1). The branching ratio was found to be (1.15 ±0.09)×10−5, consistent with the results of several measurements performed six decades ago. As a byproduct value of the 209Bi(n,gamma)210gBi thermal cross-section was measured to be 21.6±1.1 mb.
SHOR A.;
WEISSMAN L.;
AVIV O.;
EISEN Y.;
BRANDIS M.;
PAUL M.;
PLOMPEN Arjan;
TESSLER M.;
VAINTRAUB S.;
2018-03-12
AMER PHYSICAL SOC
JRC109071
2469-9985,
https://publications.jrc.ec.europa.eu/repository/handle/JRC109071,
10.1103/PhysRevC.97.034303,
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