Elsevier

Nuclear Physics

Volume 50, January 1964, Pages 424-449
Nuclear Physics

Energy levels of B10

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Abstract

The level structure in B10 revealed through the Be9+p reaction in the energy region 0.7 < Ep < 2.0 MeV, is examined in light of new absolute cross section measurements for radiative capture and analysis of the (p, d) differential cross sections previously reported in the literature. Radiative widths of prominent branches for resonance levels at Ep=938, 992, 1084 and 1290 keV are determined. Spectroscopic designations and reduced widths are assigned and discussed for seven levels corresponding to resonances at 938, 980, 992, 1084, 1150, 1290 and 1650 keV. Proposed spins and parities are 2, 2+, 2, 0+, 1+, 2 and 2, respectively. An alternate assignment of 1+ and 2 for the levels at Ep = 938 and 1150 keV is also possible with the additional possibility that 1150 and 1290 levels are in fact identical. The level at Ep = 1650 keV may be 2+ in character. Three more hindrance factors illustrative of the Morpurgo rule are determined for the proposed branching ratios in the decay of the 3.58 MeV level in B10, in view of a newly discovered E2 branch in this decay.

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    ††

    Research supported in part by the U. S. Atomic Energy Commission.

    Presently on leave at Université de Paris, Orsay (Seine-et-Oise), France.

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