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

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

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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.
Original languageEnglish
Pages (from-to)43-47
Number of pages5
JournalThe European Physical Journal A
Volume5
Issue number1
DOIs
Publication statusPublished - May 1999

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Smith, M. B., Chapman, R., Cocks, J. F. C., Dorvaux, O., Helariutta, K., Jones, P. M., Julin, R., Juutinen, S., Kankaanpää, H., Kettunen, H., Kuusiniemi, P., Le Coz, Y., Leino, M., Middleton, D. J., Muikku, M., Nieminen, P., Rahkila, P., Savelius, A., & Spohr, K. M. (1999). First observation of excited states in 197At: the onset of deformation in neutron-deficient astatine nuclei. The European Physical Journal A, 5(1), 43-47. https://doi.org/10.1007/s100500050254