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Beta Decay Of72Co And Excited Levels In72Ni

 

作者: R. Grzywacz,   M. Sawicka,   M. Pfu¨tzner,   J. M. Daugas,   J. Giovinazzo,   H. Grawe,   I. Matea,   F. Becker,   C. Bingham,   R. Borcea,   E. Bouchez,   A. Buta,   G. Belier,   J. E. Sauvestre,   E. Dragulescu,   G. Georgiev,   F. Ibrahim,   F. Hammache,   P. Mayet,   V. Meot,   M. Lewitowicz,   F. de Olivieira,   F. Negoita,   O. Perru,   K. Rykaczewski,   O. Roig,   O. Sorlin,   I. Stefan,   C. Stodel,   M. G. Saint‐Laurent,   M. Stanoiu,   C. Theisen,   D. Verney,  

 

期刊: AIP Conference Proceedings  （AIP Available online 1903）
卷期: Volume 656, issue 1  

页码: 233-240

 

ISSN:0094-243X

 

年代: 1903

 

DOI:10.1063/1.1556647

 

出版商: AIP

 

数据来源: AIP

 

摘要:

An experiment was performed at GANIL to observe isomeric‐ and beta‐delayed gamma rays from very neutron‐rich nuclei around74Ni. Fragmentation products of the86Kr beam at 58 AMeV were studied using new devices: the LISE 2000 spectrometer and detectors from the EXOGAM germanium array. The primary aim of the experiment was to find the 8+microsecond isomer in76Ni and to perform beta decay spectroscopy of Co nuclei. We have successfully measured the beta delayed gammas from the decay of72Co to72Ni. The energies for the lowest excited states in72Ni are proposed, with the first 2+state at 1096 keV. These findings suggest a solution of the problem of the disappearance of the 8+isomer in72Ni. We also measured beta decay of other neutron‐rich Co isotopes including70Co. First evidence was found for a new short lived isomer, most likely the I&pgr;=8+state, in76Ni. © 2003 American Institute of Physics

 

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