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Identification and Structure of High-spin Particle-hole States in 89Mo

Weiszflog, M.; Rudolph, Dirk LU ; Gross, C. J.; Kabadiyski, M. K.; Lieb, K. P.; Grawe, H.; Heese, J.; Maier, K. H.; Eberth, J. and Skoda, S. (1993) In Zeitschrift für Physik A Hadrons and Nuclei 344(4). p.395-403
Abstract
Particle-gammagamma and gammagamma-coincidences of the reaction Ni-58(Ar-36, 4 pn)89Mo have been used to gain more information about high spin states in 89Mo and to establish the yrast sequence up to 7.6 MeV excitation energy and probable spin 37/2 h. Spins and parities were assigned on the basis of DCO-ratios measured with the OSIRIS spectrometer and a large volume Ge detector placed at 162-degrees to the beam. Furthermore, a gamma-ray angular distribution experiment was carried out using the reaction Ni-58(Cl-35, 3 pn)89Mo. As in the neighboring isotopes 88Mo and Mo-90, the positive-parity high-spin states can be grouped into shell model multiplets characterized by increasing seniorities of proton particles and neutron holes in the 1... (More)
Particle-gammagamma and gammagamma-coincidences of the reaction Ni-58(Ar-36, 4 pn)89Mo have been used to gain more information about high spin states in 89Mo and to establish the yrast sequence up to 7.6 MeV excitation energy and probable spin 37/2 h. Spins and parities were assigned on the basis of DCO-ratios measured with the OSIRIS spectrometer and a large volume Ge detector placed at 162-degrees to the beam. Furthermore, a gamma-ray angular distribution experiment was carried out using the reaction Ni-58(Cl-35, 3 pn)89Mo. As in the neighboring isotopes 88Mo and Mo-90, the positive-parity high-spin states can be grouped into shell model multiplets characterized by increasing seniorities of proton particles and neutron holes in the 1 g9/2 shell. The negative-parity states can be explained with one nucleon moving in the P1/2 orbit. The energies and wave functions of these states have been deduced by means of the shell model code RITSSCHIL. The 2584 keV (21/2+) is an isomeric state the mean life of which has been estimated from delayed gammagamma-coincidences. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Zeitschrift für Physik A Hadrons and Nuclei
volume
344
issue
4
pages
395 - 403
publisher
Springer
external identifiers
  • scopus:34250080609
ISSN
0939-7922
DOI
10.1007/BF01283194
language
English
LU publication?
no
id
03f50fd2-baca-445f-b441-de38624d21e8 (old id 3964873)
alternative location
http://link.springer.com/article/10.1007/BF01283194
date added to LUP
2013-08-13 18:53:14
date last changed
2017-01-01 06:44:16
@article{03f50fd2-baca-445f-b441-de38624d21e8,
  abstract     = {Particle-gammagamma and gammagamma-coincidences of the reaction Ni-58(Ar-36, 4 pn)89Mo have been used to gain more information about high spin states in 89Mo and to establish the yrast sequence up to 7.6 MeV excitation energy and probable spin 37/2 h. Spins and parities were assigned on the basis of DCO-ratios measured with the OSIRIS spectrometer and a large volume Ge detector placed at 162-degrees to the beam. Furthermore, a gamma-ray angular distribution experiment was carried out using the reaction Ni-58(Cl-35, 3 pn)89Mo. As in the neighboring isotopes 88Mo and Mo-90, the positive-parity high-spin states can be grouped into shell model multiplets characterized by increasing seniorities of proton particles and neutron holes in the 1 g9/2 shell. The negative-parity states can be explained with one nucleon moving in the P1/2 orbit. The energies and wave functions of these states have been deduced by means of the shell model code RITSSCHIL. The 2584 keV (21/2+) is an isomeric state the mean life of which has been estimated from delayed gammagamma-coincidences.},
  author       = {Weiszflog, M. and Rudolph, Dirk and Gross, C. J. and Kabadiyski, M. K. and Lieb, K. P. and Grawe, H. and Heese, J. and Maier, K. H. and Eberth, J. and Skoda, S.},
  issn         = {0939-7922},
  language     = {eng},
  number       = {4},
  pages        = {395--403},
  publisher    = {Springer},
  series       = {Zeitschrift für Physik A Hadrons and Nuclei},
  title        = {Identification and Structure of High-spin Particle-hole States in 89Mo},
  url          = {http://dx.doi.org/10.1007/BF01283194},
  volume       = {344},
  year         = {1993},
}