First observation of excited states in 197At: the onset of deformation in neutron-deficient astatine nuclei

M.B Smith,P Kuusiniemi,J.F.C Cocks,H Kankaanpää,M Leino,K.-M Spohr,P Nieminen,H Kettunen,S Juutinen,D.J Middleton,P Rahkila,O Dorvaux,M Muikku,Y Le Coz,A Savelius,R Chapman,R Julin,K Helariutta,P.M Jones

doi:10.1007/s100500050254

First observation of excited states in 197At: the onset of deformation in neutron-deficient astatine nuclei

M.B Smith, P Kuusiniemi + Show 17 more

https://doi.org/10.1007/s100500050254

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Journal: The European physical journal. A, Hadrons and nuclei	Publication Date: May 1, 1999
Citations: 23

Affiliation: University of the West of Scotland, University of Jyväskylä, Atomic Energy and Alternative Energies Commission, CEA Saclay

#Neutron-deficient Nuclei #Recoil-decay-tagging + Show 6 more

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Abstract

Excited states in the Z= 85 nucleus 197At have been identified for the first time using the recoil-decay-tagging (RDT) technique. The excitation energy of these states is found to be consistent with the systematics of neutron-deficient astatine nuclei and with theoretical calculations indicating that the nucleus may be deformed in its ground state.

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