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

Caamano, M (author)
Walker, PM (author)
Regan, PH (author)
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Pfutzner, M (author)
Podolyak, Z (author)
Gerl, J (author)
Hellström, Margareta (author)
Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
Mayet, P (author)
Mineva, Milena (author)
Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Aprahamian, A (author)
Benlliure, J (author)
Bruce, AM (author)
Butler, PA (author)
Gil, DC (author)
Cullen, DM (author)
Doring, J (author)
Enqvist, T (author)
Fox, C (author)
Narro, JG (author)
Geissel, H (author)
Gelletly, W (author)
Giovinazzo, J (author)
Gorska, M (author)
Grawe, H (author)
Grzywacz, R (author)
Kleinbohl, A (author)
Korten, W (author)
Lewitowicz, M (author)
Lucas, R (author)
Mach, H (author)
O'Leary, CD (author)
De Oliveira, F (author)
Pearson, CJ (author)
Rejmund, F (author)
Rejmund, M (author)
Sawicka, M (author)
Schaffner, H (author)
Schlegel, C (author)
Schmidt, K (author)
Schmidt, KH (author)
Stevenson, PD (author)
Theisen, C (author)
Vives, F (author)
Warner, DD (author)
Wheldon, C (author)
Wollersheim, HJ (author)
Wooding, S (author)
Xu, F (author)
Yordanov, O (author)
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 (creator_code:org_t)
2004-12-07
2005
English.
In: European Physical Journal A. Hadrons and Nuclei. - : Springer Science and Business Media LLC. - 1434-6001. ; 23:2, s. 201-215
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Publication and Content Type

art (subject category)
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