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Isomers in neutron-rich A approximate to 190 nuclides from Pb-208 fragmentation

Caamano, M ; Walker, PM ; Regan, PH ; Pfutzner, M ; Podolyak, Z ; Gerl, J ; Hellström, Margareta LU ; Mayet, P ; Mineva, Milena LU and Aprahamian, A , et al. (2005) In European Physical Journal A. Hadrons and Nuclei 23(2). p.201-215
Abstract
Relativistic projectile fragmentation of Pb-208 has been used to produce isomers in neutron-rich, A approximate to 190 nuclides. A forward-focusing spectrometer provided ion-by-ion mass and charge identification. The detection of gamma-rays emitted by stopped ions has led to the assignment of isomers in Ta-188, W-190, Re-192, Re-193, Os-195, Ir-197, Ir-198, Pt-200, Pt-201, Pt-202 and Au-203, with half-lives ranging from approximately 10 ns to 1 ms. Tentative isomer information has been found also for Er-174, Er-175, Hf-185, Re-191, Re-194 and Ir-199. In most cases, time-correlated, singles gamma-ray events provided the first spectroscopic data on excited states for each nuclide. In Pt-200 and Pt-201. the assignments are supported by... (More)
Relativistic projectile fragmentation of Pb-208 has been used to produce isomers in neutron-rich, A approximate to 190 nuclides. A forward-focusing spectrometer provided ion-by-ion mass and charge identification. The detection of gamma-rays emitted by stopped ions has led to the assignment of isomers in Ta-188, W-190, Re-192, Re-193, Os-195, Ir-197, Ir-198, Pt-200, Pt-201, Pt-202 and Au-203, with half-lives ranging from approximately 10 ns to 1 ms. Tentative isomer information has been found also for Er-174, Er-175, Hf-185, Re-191, Re-194 and Ir-199. In most cases, time-correlated, singles gamma-ray events provided the first spectroscopic data on excited states for each nuclide. In Pt-200 and Pt-201. the assignments are supported by gamma-gamma coincidences. Isomeric ratios provide additional information, such as half-life and transition energy constraints in particular cases. The level structures of the platinum isotopes are discussed, and comparisons are made with isomer systematics. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal A. Hadrons and Nuclei
volume
23
issue
2
pages
201 - 215
publisher
Springer
external identifiers
  • wos:000227184600003
  • scopus:12844272959
ISSN
1434-6001
DOI
10.1140/epja/i2004-10079-7
language
English
LU publication?
yes
id
cf863056-c682-473f-898d-3f1ccbf73cdd (old id 251924)
date added to LUP
2016-04-01 15:35:57
date last changed
2022-01-28 06:05:43
@article{cf863056-c682-473f-898d-3f1ccbf73cdd,
  abstract     = {{Relativistic projectile fragmentation of Pb-208 has been used to produce isomers in neutron-rich, A approximate to 190 nuclides. A forward-focusing spectrometer provided ion-by-ion mass and charge identification. The detection of gamma-rays emitted by stopped ions has led to the assignment of isomers in Ta-188, W-190, Re-192, Re-193, Os-195, Ir-197, Ir-198, Pt-200, Pt-201, Pt-202 and Au-203, with half-lives ranging from approximately 10 ns to 1 ms. Tentative isomer information has been found also for Er-174, Er-175, Hf-185, Re-191, Re-194 and Ir-199. In most cases, time-correlated, singles gamma-ray events provided the first spectroscopic data on excited states for each nuclide. In Pt-200 and Pt-201. the assignments are supported by gamma-gamma coincidences. Isomeric ratios provide additional information, such as half-life and transition energy constraints in particular cases. The level structures of the platinum isotopes are discussed, and comparisons are made with isomer systematics.}},
  author       = {{Caamano, M and Walker, PM and Regan, PH and Pfutzner, M and Podolyak, Z and Gerl, J and Hellström, Margareta and Mayet, P and Mineva, Milena and Aprahamian, A and Benlliure, J and Bruce, AM and Butler, PA and Gil, DC and Cullen, DM and Doring, J and Enqvist, T and Fox, C and Narro, JG and Geissel, H and Gelletly, W and Giovinazzo, J and Gorska, M and Grawe, H and Grzywacz, R and Kleinbohl, A and Korten, W and Lewitowicz, M and Lucas, R and Mach, H and O'Leary, CD and De Oliveira, F and Pearson, CJ and Rejmund, F and Rejmund, M and Sawicka, M and Schaffner, H and Schlegel, C and Schmidt, K and Schmidt, KH and Stevenson, PD and Theisen, C and Vives, F and Warner, DD and Wheldon, C and Wollersheim, HJ and Wooding, S and Xu, F and Yordanov, O}},
  issn         = {{1434-6001}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{201--215}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal A. Hadrons and Nuclei}},
  title        = {{Isomers in neutron-rich A approximate to 190 nuclides from Pb-208 fragmentation}},
  url          = {{https://lup.lub.lu.se/search/files/4429365/2368943.pdf}},
  doi          = {{10.1140/epja/i2004-10079-7}},
  volume       = {{23}},
  year         = {{2005}},
}