Proton emission from an oblate nucleus p>151p>Lu

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• 作者：M.G. Procter ; D.M. Cullen ; M.J. Taylor ; G.A. Alharshan ; L.S. Ferreira ; E. Maglione ; K. Auranen ; T. Grahn ; P.T. Greenlees ; U. Jakobsson ; R. Julin ; A. Herz¨¢¨¾ ; J. Konki ; M. Leino ; J. Pakarinen ; J. Partanen ; P. Peura ; P. Rahkila ; P. Ruotsalainen ; M. S ; zelius ; et al.
• 关键词：Lifetimes ; B(E2)B(E2) ; Recoil-distance Doppler-shift method ; Recoil-decay tagging ; Isomeric states ; A=151A=151
• 刊名：Physics Letters B
• 出版年：2013
• 出版时间：9 August, 2013
• 年：2013
• 卷：725
• 期：1-3
• 页码：79-84
• 全文大小：496 K

文摘

Excited states in the proton-unbound nucleus p>151p>Lu have been established using ¦Ã-ray coincidence techniques. The lifetime of the first excited state above the proton-emitting ground state has been measured using the recoil-distance Doppler-shift method combined with recoil-decay tagging. The experimental level scheme and extracted lifetime have been compared with state-of-the-art theoretical calculations based upon a non-adiabatic deformed Woods-Saxon potential. This comparison suggests that the proton-emitting ground state in p>151p>Lu is mildly oblate with a deformation and represents the best evidence to date for proton emission from an oblate nucleus.