Lifetime Measurements in Neutron-rich Xe Isotopes - Evolution of Quadrupole Collectivity Beyond $^{132}$Sn

S. Ilieva S. Bonig A.-L. Hartig C. Henrich A. Ignatov Th. Kroll M. Thurauf J. Jolie J.-M. Regis N. Saed-Samii A. Blanc 1 G. de France 2 M. Jentschel 1 U. Koster 1 P. Mutti G.S. Simpson T. Soldner W. Urban N. Marginean C.A. Ur H. Mach L.M. Fraile V. Paziy P.H. Regan A.M. Bruce S. Lalkovski W. Korten 3
1 ILL - Institut Laue-Langevin
2 GANIL - Grand Accélérateur National d'Ions Lourds
3 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
Abstract : Picosecond lifetimes of excited states in neutron-rich Xe isotopes were measured at the Institut Laue- Langevin via $\gamma$-ray spectroscopy of fission fragments from neutron-induced fission of 235U and 241Pu targets. The data collected with the recently installed fast timing array FATIMA in combination with the EXOGAM Ge array were analysed using the new generalized centroid difference method. Our aim is to study the quadrupole and octupole collectivity, arising in the mass region beyond the doubly magic 132Sn, by means of transition probabilities. These can be calculated from the directly measured lifetimes.
Keywords : neutron-rich Xe isotopes quadrupole collectivity Lifetimes of excited states
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Conference papers
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Submitted on : Thursday, September 10, 2015 - 10:30:20 AM
Last modification on : Tuesday, April 3, 2018 - 10:32:03 AM

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S. Ilieva, S. Bonig, A.-L. Hartig, C. Henrich, A. Ignatov, et al.. Lifetime Measurements in Neutron-rich Xe Isotopes - Evolution of Quadrupole Collectivity Beyond $^{132}$Sn. Advances in Radioactive Isotope Science (ARIS 2014), Jun 2014, Tokyo, Japan. pp.020010, ⟨10.7566/JPSCP.6.020010⟩. ⟨in2p3-01196590⟩

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