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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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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
2007-08-15 09:30:42
date last changed
2017-08-27 05:10:47
@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          = {http://dx.doi.org/10.1140/epja/i2004-10079-7},
  volume       = {23},
  year         = {2005},
}