Yrast isomers in exotic N=81 nucleus Yb151 studied using a fragment mass analyzer

D. Nisius, B. Fornal, I. G. Bearden, R. Broda, R. H. Mayer, Z. W. Grabowski, P. J. Daly, C. N. Davids, I. Ahmad, B. B. Back, K. Bindra, M. P. Carpenter, W. Chung, D. Henderson, R. G. Henry, R. V.F. Janssens, T. L. Khoo, T. Lauritsen, Y. Liang, F. SoramelA. V. Ramayya

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Product recoils from the reaction Ru96 +255 MeV Ni58 → Hf*154 were analyzed using the Argonne Fragment Mass Analyzer and transported to a collector foil behind the focal plane, where decay of μs isomers could be studied under low background conditions. The recoils were dispersed in A/q as they traversed the position-sensitive focal-plane detector, and recoil-γ-ray coincidences could thus be used to assign masses for specific γ-ray cascades. By use of these methods, yrast isomers with half-lives of 2.6(7) μs and 20(1) μs have been firmly assigned to the exotic N=81 nucleus Yb151, and the main features of the isomeric decays have been established. The yrast level structure of Yb151 and lighter N=81 isotones are compared.

Original languageEnglish (US)
Pages (from-to)1929-1932
Number of pages4
JournalPhysical Review C
Volume47
Issue number5
DOIs
StatePublished - Jan 1 1993
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Nisius, D., Fornal, B., Bearden, I. G., Broda, R., Mayer, R. H., Grabowski, Z. W., Daly, P. J., Davids, C. N., Ahmad, I., Back, B. B., Bindra, K., Carpenter, M. P., Chung, W., Henderson, D., Henry, R. G., Janssens, R. V. F., Khoo, T. L., Lauritsen, T., Liang, Y., ... Ramayya, A. V. (1993). Yrast isomers in exotic N=81 nucleus Yb151 studied using a fragment mass analyzer. Physical Review C, 47(5), 1929-1932. https://doi.org/10.1103/PhysRevC.47.1929