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Proton and Neutron g9/2 Alignments in the N=46 Isotones 86Zr and 87Nb

Weiszflog, M. ; Billowes, J. ; Eberth, J. ; Gross, C. J. ; Kabadiyski, M. K. ; Lieb, K. P. ; Mylaeus, T. and Rudolph, Dirk LU orcid (1995) In Nuclear Physics, Section A 584(1). p.133-148
Abstract
The magnetic moments of the 8(+) yrast state in Zr-86 and the 17/2(-) and 21/2(+) yrast states in Nb-87 have been measured via the IMPAD technique, The nuclei were produced in the Ni-58(S-32,Xp) reaction; the time-integral Larmor precessions were measured after recoil implantation into a polarised Fe foil. The g-factors are used to deduce the character of the g(9/2) Shell alignments within the states and their structures are interpreted with the shell model in the (g(9/2),p(1/2)) single-particle space, using the Gross-Frenkel two-body matrix elements. A survey on the various alignment schemes in these neutron-deficient isotopes is given. We find that neutron-pair alignment is favoured for even-parity states in the near-spherical nuclei... (More)
The magnetic moments of the 8(+) yrast state in Zr-86 and the 17/2(-) and 21/2(+) yrast states in Nb-87 have been measured via the IMPAD technique, The nuclei were produced in the Ni-58(S-32,Xp) reaction; the time-integral Larmor precessions were measured after recoil implantation into a polarised Fe foil. The g-factors are used to deduce the character of the g(9/2) Shell alignments within the states and their structures are interpreted with the shell model in the (g(9/2),p(1/2)) single-particle space, using the Gross-Frenkel two-body matrix elements. A survey on the various alignment schemes in these neutron-deficient isotopes is given. We find that neutron-pair alignment is favoured for even-parity states in the near-spherical nuclei with N greater than or equal to 46 but a major component of the odd-parity 17/2(1)(-) state arises from the alignment of a neutron-proton pair in the g(9/2) shell coupled to an unpaired neutron in the p(1/2) shell. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics, Section A
volume
584
issue
1
pages
133 - 148
publisher
Elsevier
external identifiers
  • scopus:4244118555
ISSN
0375-9474
DOI
10.1016/0375-9474(94)00530-Z
language
English
LU publication?
no
additional info
1
id
d5c6edf2-6660-4e47-b2db-e77b57485e57 (old id 3964809)
alternative location
http://www.sciencedirect.com/science/article/pii/037594749400530Z
date added to LUP
2016-04-01 16:13:37
date last changed
2021-01-04 15:41:07
@article{d5c6edf2-6660-4e47-b2db-e77b57485e57,
  abstract     = {{The magnetic moments of the 8(+) yrast state in Zr-86 and the 17/2(-) and 21/2(+) yrast states in Nb-87 have been measured via the IMPAD technique, The nuclei were produced in the Ni-58(S-32,Xp) reaction; the time-integral Larmor precessions were measured after recoil implantation into a polarised Fe foil. The g-factors are used to deduce the character of the g(9/2) Shell alignments within the states and their structures are interpreted with the shell model in the (g(9/2),p(1/2)) single-particle space, using the Gross-Frenkel two-body matrix elements. A survey on the various alignment schemes in these neutron-deficient isotopes is given. We find that neutron-pair alignment is favoured for even-parity states in the near-spherical nuclei with N greater than or equal to 46 but a major component of the odd-parity 17/2(1)(-) state arises from the alignment of a neutron-proton pair in the g(9/2) shell coupled to an unpaired neutron in the p(1/2) shell.}},
  author       = {{Weiszflog, M. and Billowes, J. and Eberth, J. and Gross, C. J. and Kabadiyski, M. K. and Lieb, K. P. and Mylaeus, T. and Rudolph, Dirk}},
  issn         = {{0375-9474}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{133--148}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Physics, Section A}},
  title        = {{Proton and Neutron g9/2 Alignments in the N=46 Isotones 86Zr and 87Nb}},
  url          = {{http://dx.doi.org/10.1016/0375-9474(94)00530-Z}},
  doi          = {{10.1016/0375-9474(94)00530-Z}},
  volume       = {{584}},
  year         = {{1995}},
}