Eur. Phys. J. A (2005) 25: 169-172
https://doi.org/10.1140/epjad/i2005-06-012-6

ENAM 2004

First observation of ⁵⁴Zn and its decay by two-proton emission

¹ CENBG, Le Haut Vigneau, F-33175, Gradignan Cedex, France
² Faculté de Physique, USTHB, BP32, 16111 Bab Ezzouar, Alger, Algeria
³ Grand Accélérateur National d’Ions Lourds, B.P. 5027, F-14076, Caen Cedex, France
⁴ Institute of Atomic Physics, P.O. Box MG6, Bucharest-Margurele, Romania
⁵ Departamento de Fisica de Particulas, Universidad de Santiago de Compostela, E-15782, Santiago de Compostela, Spain
⁶ Institut de physique nucléaire d’Orsay, 15 rue Georges Clemenceau, F-91406, Orsay Cedex, France
⁷ Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001, Leuven, Belgium

^* e-mail: blank@cenbg.in2p3.fr

Received: 3 December 2004
Accepted: 18 February 2005
Published online: 15 April 2005

Abstract

In an experiment performed at the LISE3 facility of GANIL, the isotope ⁵⁴Zn and its decay via two-proton emission were observed for the first time. In addition, preliminary results indicate that three implantation events of ⁴⁸Ni were observed. One of the associated decay events is compatible with a two-proton emission. New data on the decay of ⁴⁵Fe and its two-proton branch were recorded at the same time. The results for ⁵⁴Zn are compared to theory.