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Band Crossings in 83Y Revisited

Cristancho, F.; Gross, C. J.; Lieb, K. P.; Rudolph, Dirk LU ; Skeppstedt, O.; Bentley, M. A.; Gelletly, W.; Price, H. G.; Simpson, J. and Durell, J. L., et al. (1992) In Nuclear Physics, Section A 540(1-2). p.307-327
Abstract
Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a... (More)
Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a Woods-Saxon single-particle potential have been performed to illustrate the various shape changes and explain this signature inversion. (Less)
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type
Contribution to journal
publication status
published
subject
in
Nuclear Physics, Section A
volume
540
issue
1-2
pages
307 - 327
publisher
Elsevier
external identifiers
  • scopus:0001474154
ISSN
0375-9474
DOI
10.1016/0375-9474(92)90206-Y
language
English
LU publication?
no
id
8cfc7ee1-cf0b-4280-bbbc-da9b8fff8988 (old id 3963335)
alternative location
http://www.sciencedirect.com/science/article/pii/037594749290206Y
date added to LUP
2013-08-13 18:53:30
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2017-01-01 06:57:28
@article{8cfc7ee1-cf0b-4280-bbbc-da9b8fff8988,
  abstract     = {Gamma rays from the reaction Si-28(Ni-58, 3p)83Y at a beam energy of 195 MeV were recorded in recoil-gamma- and gamma-gamma-coincidence mode with the POLYTESSA array and the Daresbury recoil mass separator. The known rotational bands were extended up to probable spins 49/2+ and 45/2-; many new interconnecting dipole transitions and an additional cascade were established. The bands are interpreted in terms of the cranked shell model; they exhibit two band crossings each, associated with g9/2 neutron and proton alignment. In the negative-parity yrast bands a strong signature inversion with DELTA-e' = -100 keV and a crossing pattern alternating in the favoured and unfavoured band develop. Hartree-Fock-Bogolyubov cranking calculations with a Woods-Saxon single-particle potential have been performed to illustrate the various shape changes and explain this signature inversion.},
  author       = {Cristancho, F. and Gross, C. J. and Lieb, K. P. and Rudolph, Dirk and Skeppstedt, O. and Bentley, M. A. and Gelletly, W. and Price, H. G. and Simpson, J. and Durell, J. L. and Varley, B. J. and Rastikerdar, S.},
  issn         = {0375-9474},
  language     = {eng},
  number       = {1-2},
  pages        = {307--327},
  publisher    = {Elsevier},
  series       = {Nuclear Physics, Section A},
  title        = {Band Crossings in 83Y Revisited},
  url          = {http://dx.doi.org/10.1016/0375-9474(92)90206-Y},
  volume       = {540},
  year         = {1992},
}