The decay modes of proton drip-line nuclei with A between 42 and 47 |
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Authors: | V Borrel R Anne D Bazin C Borcea G G Chubarian R Del Moral C Détraz S Dogny J P Dufour L Faux A Fleury L K Fifield D Guillemaud-Mueller F Hubert E Kashy M Lewitowicz C Marchand A C Mueller F Pougheon M S Pravikoff M G Saint-Laurent O Sorlin |
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Institution: | 1. Institut de Physique Nucléaire, F-91406, Orsay Cedex, France 2. GANIL, BP 5027, F-14021, Caen Cedex, France 3. Centre d'Etudes Nucléaires de Bordeaux, F-33170, Gradignan, France 4. Laboratory of Nuclear Reactions, JINR, Dubna, Russia 5. Laboratoire de Physique Corpusculaire, ISMRa, F-14050, Caen, France 6. Michigan State University, 48824, East Lansing, MI, USA
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Abstract: | Neutron-deficient isotopes with Z=21 to 26 have been produced as projectile-like fragments of an intense58Ni GANIL beam of 69 MeV/nucleon. The nuclei selected by the upgraded LISE3 spectrometer were identified and implanted in a silicon detector telescope. The43Cr,47Fe and46Fe isotopes were identified for the first time whereas45Fe,45Mn,44Mn and42V were not observed, indicating probable instability of these nuclei against particle emission. Measurements of the half-lives of43Cr and46Mn have been performed and the analysis of their measured beta-delayed proton spectra has given, through the isobaric multiplet mass equation, an empirical estimation of their masses. Half-lives of44Cr,43V,47Fe and46Fe have also been measured. A discussion of various mass predictions for nuclei at the proton drip-line is given. |
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