Spectroscopy of 161Hf from low to high spin
Mason, P. J. R., Simpson, J., Paul, E. S., Riley, M. A., Auranen, K., Badran, H., Baron, J. S., Boston, A. J., Davis-Merry, T., Grahn, T., Greenlees, P., Herzan, A., Jakobsson, U., Joss, D. T., Julin, R., Juutinen, S., Konki, J., Leino, M., McPeake, C., . . . Wrigh, J. P. (2014). Spectroscopy of 161Hf from low to high spin. Physical Review C, 90(5), Article 054331. https://doi.org/10.1103/PhysRevC.90.054331
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2014Copyright
© 2014 American Physical Society. Published in this repository with the kind permission of the publisher.
Excited states in the neutron-deficient nucleus 161
72Hf89 have been populated using the 118Sn(48Ti,5n)
161Hf and 110Pd(56Fe,5n)
161Hf fusion-evaporation reactions at 240 and 270 MeV, respectively. The level scheme for 161Hf
has been extended with the observation of new band structures and an I π = (13/2+) isomeric state with a half-life
of 4.8(2) μs has been identified. The decay path from this isomer to the (7/2−) ground state is established. The
yrast band, based on the (13/2+) isomeric state, is extended up to (73/2+) and side band structures are identified
up to (69/2−) and (55/2−). Quasiparticle assignments for these rotational structures are made on the basis of
their alignment properties and Woods-Saxon cranked shell-model calculations.
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American Physical SocietyISSN Search the Publication Forum
0556-2813Keywords
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