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Particle instability of 53 Cu

Bertram Blank 1
1 NEX - Noyaux exotiques
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Abstract : The most proton-rich particle-stable or quasi-stable copper isotope identified in projectile frag- mentation reactions is 55 Cu. 54 Cu was found unbound a few years ago in such an experiment. The present note reports on a reanalysis of data to determine a life-time limit for 53 Cu. A comparison with data for 52 Ni and 54 Zn combined with EPAX calculations allows to determine a life-time limit of this nucleus of 130 ns which, in a simple barrier penetration model, yields a one-proton separation energy of − 350 keV. This experimental limit is in agreement with a prediction from the latest Atomic Mass Evaluation and with other model predictions.
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Submitted on : Thursday, June 20, 2013 - 9:00:17 AM
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Bertram Blank. Particle instability of 53 Cu. European Physical Journal A, EDP Sciences, 2013, 49, pp.45. ⟨10.1140/epja/i2013-13045-4⟩. ⟨in2p3-00835879⟩



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