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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
In-beam gamma ray and conversion electron study of Fm250
Physical Review C - Nuclear Physics, Volume 73, No. 2, Article 024308, Year 2006
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Description
We report on a set of in-beam studies of excited states in Fm250. We detected prompt γ rays by using the JUROSPHERE IV array and conversion electrons by using the SACRED spectrometer. Both devices were used in conjunction with the RITU gas-filled recoil separator located at the University of Jyväskylä. Fm250 nuclei were produced through the Hg204(Ca48,2n)Fm250 fusion-evaporation reaction. An experimental excitation function gave a maximum reaction cross section of (980 ± 160) nb at an energy of 209 MeV in the center of the target. Tagging techniques were employed, and a number of E2 transitions were observed that connected the ground-state band levels from spin 4+ up to 18+. The highly converted 4+→2+ transition is observed only by use of conversion electron spectroscopy. The observed ground-state band transitions indicate a rotational structure. We deduce a quadrupole deformation parameter of β2=0.28 ± 0.02. A low-energy background of apparent nuclear origin is observed in conversion electrons and postulated to arise from the decay of high-K bands. The half-life of Fm250 is measured to be 30.4 ± 1.5 min. © 2006 The American Physical Society.
Authors & Co-Authors
Herzberg, Rolf Dietmar
United Kingdom, Liverpool
University of Liverpool
Butler, Peter A.
United Kingdom, Liverpool
University of Liverpool
Page, Robert D.
United Kingdom, Liverpool
University of Liverpool
Jenkins, David Gareth
United Kingdom, Liverpool
University of Liverpool
Amzal, N.
United Kingdom, Liverpool
University of Liverpool
Greenlees, P. T.
Finland, Jyvaskyla
University of Jyväskylä
Jones, P. M.
Finland, Jyvaskyla
University of Jyväskylä
Julin, Rauno
Finland, Jyvaskyla
University of Jyväskylä
Juutinen, Sakari
Finland, Jyvaskyla
University of Jyväskylä
Kettunen, Heikki
Finland, Jyvaskyla
University of Jyväskylä
Kuusiniemi, Pasi
Finland, Jyvaskyla
University of Jyväskylä
Leino, Matti E.
Finland, Jyvaskyla
University of Jyväskylä
Leppänen, Ari Pekka
Finland, Jyvaskyla
University of Jyväskylä
Nieminen, Petteri H.
Finland, Jyvaskyla
University of Jyväskylä
Rahkila, Panu M.
Finland, Jyvaskyla
University of Jyväskylä
Scholey, Catherine S.
Finland, Jyvaskyla
University of Jyväskylä
Uusitalo, Juha
Finland, Jyvaskyla
University of Jyväskylä
Chatillon, Audrey
France, Gif-sur-yvette
Département de Physique Nucléaire
Korten, Wolfram
France, Gif-sur-yvette
Département de Physique Nucléaire
Theisen, Ch
France, Gif-sur-yvette
Département de Physique Nucléaire
Ackermann, Dieter
Germany, Darmstadt
Gsi Helmholtz Centre for Heavy Ion Research Gmbh
Gerl, Juergen
Germany, Darmstadt
Gsi Helmholtz Centre for Heavy Ion Research Gmbh
Helariutta, Kerttuli A.M.
Germany, Darmstadt
Gsi Helmholtz Centre for Heavy Ion Research Gmbh
Heßberger, Fritz Peter
Germany, Darmstadt
Gsi Helmholtz Centre for Heavy Ion Research Gmbh
Maj, Adam
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Mȩczyński, Witold M.
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Styczeń, Jan
Poland, Krakow
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Khoo, Teng Lek
United States, Lemont
Argonne National Laboratory
Lister, Christopher J.
United States, Lemont
Argonne National Laboratory
Afanasjev, Anatoli V.
United States, Notre Dame
University of Notre Dame
Latvia, Riga
Latvijas Universitāte
Reiter, Peter
Germany, Koln
Universität zu Köln
Eskola, Kari J.
Finland, Helsinki
Helsingin Yliopisto
Hauschild, K.
France, Paris
Cnrs Centre National de la Recherche Scientifique
Statistics
Citations: 54
Authors: 33
Affiliations: 13
Identifiers
Doi:
10.1103/PhysRevC.73.024308
ISSN:
05562813
Research Areas
Cancer