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Identification of a dipole band above the Iπ = 31/2- isomeric state in 189Pb

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Hodge, D., Cullen, D. M., Taylor, M. J., Procter, M. G., Nieminen, P., Grahn, T., Greenlees, P., Hauschild, K., Herzan, A., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Lopez-Martens, A., Partanen, J., Peura, P., Rahkila, P., . . . Uusitalo, J. (2015). Identification of a dipole band above the Iπ = 31/2- isomeric state in 189Pb. Physical Review C, 92(5), Article 054312. https://doi.org/10.1103/PhysRevC.92.054312
Published in
Physical Review C
Authors
Hodge, D. |
Cullen, D. M. |
Taylor, M. J. |
Procter, M. G. |
Nieminen, Päivi |
Grahn, Tuomas |
Greenlees, Paul |
Hauschild, Karl |
Herzan, Andrej |
Jakobsson, Ulrika |
Jones, P. |
Julin, Rauno |
Juutinen, Sakari |
Ketelhut, Steffen |
Leino, Matti |
Lopez-Martens, Araceli |
Partanen, Jari |
Peura, Pauli |
Rahkila, Panu |
Rinta-Antila, Sami |
Ruotsalainen, Panu |
Sandzelius, Mikael |
Sarén, Jan |
Scholey, Catherine |
Sorri, Juha |
Stolze, Sanna |
Uusitalo, Juha
Date
2015
Discipline
KiihdytinlaboratorioAccelerator Laboratory
Copyright
© 2015 American Physical Society. Published in this repository with the kind permission of the publisher.

 
A dipole band of six transitions built upon a firmly established I π = 31/2− isomeric state has been identified in 189Pb using recoil-isomer tagging. This is the lightest odd-mass Pb nucleus in which a dipole band is known. The dipole nature of the new transitions has been confirmed through angular-intensity arguments. The evolution of the excitation energy and the aligned-angular momentum of the states in the new dipole band are compared with those of dipole bands in heavier, odd-mass lead isotopes. This comparison suggests that the new band in 189Pb is based upon a π[s−2 1/2h9/2i13/2]11− ⊗ ν[i −1 13/2+ ]13/2+ configuration. However, the increased aligned-angular momentum in 189Pb may suggest evidence for a reduced repulsive proton/neutron-hole interaction compared to dipole bands in the heavier mass isotopes.
Publisher
American Physical Society
ISSN Search the Publication Forum
0556-2813
Keywords
lead isotopes nuclear isomers excited states dipole bands
DOI
https://doi.org/10.1103/PhysRevC.92.054312
URI

http://urn.fi/URN:NBN:fi:jyu-201606092992

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/25351696

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