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First observation of the decay of a 15(-) seniority v=4 isomer in Sn-128

Pietri, S. (author)
Jungclaus, A. (author)
Gorska, M. (author)
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Grawe, H. (author)
Pfuetzner, M. (author)
Caceres, L. (author)
Detistov, P. (author)
Lalkovski, S. (author)
Modamio, V. (author)
Podolyak, Z. (author)
Regan, P. H. (author)
Rudolph, Dirk (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
Walker, J. (author)
Werner-Malento, E. (author)
Bednarczyk, P. (author)
Doornenbal, P. (author)
Geissel, H. (author)
Gerl, J. (author)
Grebosz, J. (author)
Kojouharov, I. (author)
Kurz, N. (author)
Prokopowicz, W. (author)
Schaffner, H. (author)
Wollersheim, H. J. (author)
Andgren, Karin (author)
KTH,Kärnfysik
Benlliure, J. (author)
Benzoni, G. (author)
Bruce, A. M. (author)
Casarejos, E. (author)
Cederwall, Bo (author)
KTH,Kärnfysik
Crespi, F. C. L. (author)
Hadinia, Baharak (author)
KTH,Kärnfysik
Hellström, Margareta (author)
Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
Hoischen, Robert (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
Ilie, G. (author)
Khaplanov, Anton (author)
KTH,Kärnfysik
Kmiecik, M. (author)
Kumar, R. (author)
Maj, A. (author)
Mandal, S. (author)
Montes, F. (author)
Myalski, S. (author)
Simpson, G. (author)
Steer, S. J. (author)
Tashenov, S. (author)
Wieland, O. (author)
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 (creator_code:org_t)
2011
2011
English.
In: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 83:4, s. 044328-
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Isomeric states in the semimagic Sn128-130 isotopes were populated in the fragmentation of a Xe-136 beam on a Be-9 target at an energy of 750 A.MeV. The decay of an isomeric state in Sn-128 at an excitation energy of 4098 keV has been observed. Its half live has been determined to be T-1/2 = 220(30) ns from the time distributions of the delayed gamma rays emitted in its decay. gamma gamma coincidence relations were analyzed in order to establish the decay pattern of the newly established state toward the known (7(-)) and (10(+)) isomers at excitation energies of 2092 and 2492 keV, respectively. Based on a comparison with results of state-of-the-art shell-model calculations the new isomeric state is proposed to have the nu h(11/2)(-3)d(3/2)(-1) configuration with the four neutron holes in Sn-132 maximally aligned to a total spin of I-pi = 15(-).

Subject headings

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

Keyword

Nuclear physics
Kärnfysik

Publication and Content Type

ref (subject category)
art (subject category)

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