A fast-timing experiment was performed at the Argonne National Laboratory to measure the lifetimes of the lowest lying states of nuclei belonging to the deformed regions around mass number A 110 and A 150. These regions were populated via spontaneous fission of 252 Cf and the gamma radiation following the decay of excited states in the fission fragments was measured using 51 Gammasphere detectors coupled with 25 LaBr 3 :Ce detectors. A brief description of the acquisition system and some preliminary results from the fast-timing analysis of the fission fragment 100Zr are presented. The lifetime value of τ = 840(65) ps was found for the 2 + state in 100 Zr consistent within one standard deviation of the adopted value with 791 +26 -35 ps. This is associated with a quadrupole deformation parameter of 0.36(2) which is within one standard deviation of the literature value of 0.3556 +82 -57 .

Fast-timing measurements in neutron-rich odd-mass zirconium isotopes using LaBr3:Ce detectors coupled with Gammasphere / E.R. Gamba, S. Lalkovski, M. Rudigier, A.M. Bruce, S. Bottoni, M.P. Carpenter, S. Zhu, A.D. Ayangeakaa, J.T. Anderson, T.A. Berry, I. Burrows, R.J. Carroll, P. Copp, M. Carmona Gallardo, D.M. Cullen, T. Daniel, J.P. Greene, L.A. Gurgi, D.J. Hartley, R. Ilieva, S. Ilieva, R.V.F. Janssens, F.G. Kondev, T. Kroll, G.J. Lane, T. Lauritsen, I. Lazarus, G. Lotay, G. Fernandez Martinez, Z. Podolyak, V. Pucknell, M. Reed, P.H. Regan, J. Rohrer, J. Sethi, D. Seweryniak, C.M. Shand, J. Simpson, M. Smolen, E.A. Stefanova, V. Vedia, O. Yordanov. - In: EPJ WEB OF CONFERENCES. - ISSN 2101-6275. - 193(2018), pp. 05004.1-05004.6. ((Intervento presentato al 6. convegno Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei, FISSION 2017 nel 2017.

Fast-timing measurements in neutron-rich odd-mass zirconium isotopes using LaBr3:Ce detectors coupled with Gammasphere

E.R. Gamba;S. Bottoni;
2018

Abstract

A fast-timing experiment was performed at the Argonne National Laboratory to measure the lifetimes of the lowest lying states of nuclei belonging to the deformed regions around mass number A 110 and A 150. These regions were populated via spontaneous fission of 252 Cf and the gamma radiation following the decay of excited states in the fission fragments was measured using 51 Gammasphere detectors coupled with 25 LaBr 3 :Ce detectors. A brief description of the acquisition system and some preliminary results from the fast-timing analysis of the fission fragment 100Zr are presented. The lifetime value of τ = 840(65) ps was found for the 2 + state in 100 Zr consistent within one standard deviation of the adopted value with 791 +26 -35 ps. This is associated with a quadrupole deformation parameter of 0.36(2) which is within one standard deviation of the literature value of 0.3556 +82 -57 .
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/680488
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