Elsevier

Nuclear Physics A

Volume 277, Issue 3, 21 February 1977, Pages 451-463
Nuclear Physics A

A study of the 210mBi(t, α)209Pb reaction

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Abstract

The 210mBi(t, α)209Pb reaction has been measured using an 8 μg/cm2 target of 210mBi in the 9 isomeric state at 0.271 MeV. Thirty-four levels up to about 5 MeV excitation were observed with the bulk of the transition strength comprising two-particle one-hole configurations of the form [ππ−1ν]. The 2g92 and 1i112 single neutron states were excited and their relative spectroscopic strengths provide information about the πν configurations in the 9 target state. Transitions to the 152 states at 1.423 and 3.059 MeV are used to estimate admixtures of the [208Pb(3) ⊗ g92] particle-plus-core configuration. The gross features of the 210mBi(t, α) spectrum are compared with (t, α) spectra measured from 208Pb and 209Bi. The level densities, summed cross sections and average Q-values are discussed.

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††

Work performed under the auspices of the US Energy Research and Development Administration.

On leave from McMaster University, Hamilton, Ontario, Canada.

†††

Work supported by ERDA Contract AT-(40-1)-2034.

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