2019 Impact factor 2.176
Hadrons and Nuclei


Eur. Phys. J. A 10, 73-84

Decay of proton-rich nuclei between $\mathsf{^{39}Ti}$ and $\mathsf{^{49}Ni}$

J. Giovinazzo1, B. Blank1, C. Borcea2, M. Chartier1, S. Czajkowski1, G. de France3, R. Grzywacz4, Z. Janas4, M. Lewitowicz3, F. de Oliveira Santos3, M. Pfützner4, M.S. Pravikoff1 and J.C. Thomas1

1  Centre d'Etudes Nucléaires de Bordeaux-Gradignan, Le Haut-Vigneau, B.P. 120, F-33175 Gradignan Cedex, France
2  Institute of Atomic Physics, P.O. Box MG6, Bucharest-Margurele, Romania
3  Grand Accélérateur National d'Ions Lourds, B.P. 5027, F-14076 Caen Cedex, France
4  Institute of Experimental Physics, University of Warsaw, PL-00-681 Warsaw, Hoza 69, Poland

giovinaz@cenbg.in2p3.fr

(Received: 26 July 2000 / Revised version: 22 November 2000 Communicated by C. Signorini)

Abstract
Decay studies of very neutron-deficient nuclei ranging from 39Ti to 49Ni have been performed during a projectile fragmentation experiment at the GANIL/LISE3 separator. For all nuclei studied in this work, 39,40Ti, 42,43Cr, 46Mn, 45,46,47Fe and 49Ni, half-lives and decay spectra have been measured. In a few cases, $\gamma$ coincidence measurements helped to successfully identify the initial and final states of transitions. In these cases, partial decay scheme are proposed. For the most exotic isotopes, 39Ti, 42Cr, 45Fe and 49Ni, which are candidates for two-proton radioactivity from the ground state, no clear evidence of this process is seen in our spectra and we conclude rather on a delayed particle decay.

PACS
27.40.+z - $39 \leq A \leq 58$ .
21.10.Dr - Binding energies and masses.
23.50.+z - Decay by proton emission.
25.70.Mn - Projectile and target fragmentation.

© Società Italiana di Fisica, Springer-Verlag 2001