Oblately deformed isomeric proton-emitting state in 151Lu
Taylor, M. J., Cullen, D. M., Procter, M. G., Smith, A. J., McFarlane, A., Twist, V., Alharshan, G. A., Ferreira, L. S., Maglione, E., Auranen, K., Grahn, T., Greenlees, P., Hauschild, K., Herzan, A., Jakobsson, U., Julin, R., Juutinen, S., Ketelhut, S., Konki, J., . . . Doncel, M. (2015). Oblately deformed isomeric proton-emitting state in 151Lu. Physical Review C, 91(4), Article 044322. https://doi.org/10.1103/PhysRevC.91.044322
Published in
Physical Review CDate
2015Copyright
© 2015 American Physical Society. Published in this repository with the kind permission of the publisher.
Gamma rays from excited states feeding a proton-emitting isomeric-state in 151Lu have been observed for
the first time. Comparison with state-of-the-art nonadiabatic quasiparticle calculations indicates an oblately
deformed, 3/2+ proton-emitting state with a quadrupole deformation of β2 = −0.11. The calculations suggest
an increase in quadrupole deformation, to β2 = −0.18, with increasing spin which is understood in terms of the
mixing of Nilsson states at the Fermi surface. It is also shown that the proton decay half-life is consistent with
that from a 3/2+ state with a quadrupole deformation of β2 = −0.12.
Publisher
American Physical SocietyISSN Search the Publication Forum
0556-2813Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/24704414