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Probing single-particle structures beyond the proton drip line

Abstract : Single-particle energies have been investigated in the closed neutron shell proton emitter ^{155}Ta. The ^{155}Ta nuclei were populated through the $\alpha$ decay of ^{159}Re, which has been observed for the first time. The ^{159}Re nuclei were produced in reactions of 300 MeV ^{58}Ni ions with an isotopically enriched ^{106}Cd target, separated in-flight using the RITU separator and implanted into the GREAT spectrometer. The ^{159}Re $\alpha$ decay emanates from the proton-emitting $\pi h_{11/2}$ state and populates a state in ^{155}Ta which decays by the emission of a proton from a $\pi h_{11/2}$ orbital. The results fit in with the systematics of proton and $\alpha$-particle separation energies in the region, but disagree with the previously reported decay properties of ^{155}Ta.
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http://hal.in2p3.fr/in2p3-00195557
Contributor : Béatrice Forrler <>
Submitted on : Tuesday, December 11, 2007 - 10:55:05 AM
Last modification on : Friday, May 8, 2020 - 1:10:39 AM

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R.D. Page, L. Bianco, I.G. Darby, D.T. Joss, T. Grahn, et al.. Probing single-particle structures beyond the proton drip line. PROTON EMITTING NUCLEI AND RELATED TOPICS: International Conference-PROCON 2007, Jun 2007, Lisbonne, Portugal. pp.137-142, ⟨10.1063/1.2827246⟩. ⟨in2p3-00195557⟩

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