Speakers
Dr
A. Chakraborty
(Department of Physics, Siksha Bhavana, Visva-Bharati, Santiniketan - 731 235)Mr
A.K. Mondal
(Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085; Department of Physics, Siksha Bhavana, Visva-Bharati, Santiniketan - 731 235)Dr
S. Mukhopadhyay
(Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085)
Description
Nuclei in the vicinity of highly deformed as well as near-spherical region are expected to exhibit multi-faceted excitation modes in their level structures. 96Sr and its N=58 isotone, 98Zr, are positioned at one such interesting point in the nuclide chart. It was also predicted earlier that the 0+ states in these nuclei are associated with different types of deformations. As these neutron-rich nuclei are difficult to populate through conventional fusion evaporation reaction, the previous investigations on these nuclei were mostly carried out using the spontaneous fission (SF) data from 252Cf and 248Cm radioactive sources. The present study attempts an investigation of nuclear structure phenomena associated with 96Sr and 98Zr nuclei, in the low- and medium- spin regimes, incorporating the new spectroscopic results obtained from the experiment employing thermal neutron induced fission of 235U. The experiment was performed at the PF1B line of the high-flux reactor facility at the Institut Laue-Langevin (ILL), Grenoble, France. The -rays from the fission fragments were detected by an array consisting of eight EXOGAM large clovers, six large coaxial detectors from GASP and two unsuppressed clovers from the ILL. Evidence of shape-coexistence phenomenon with all its complexities and consequences, and the possible onset of other exotic modes of excitations in these nuclei will be presented.
Primary authors
Dr
A. Chakraborty
(Department of Physics, Siksha Bhavana, Visva-Bharati, Santiniketan - 731 235)
Mr
A.K. Mondal
(Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085; Department of Physics, Siksha Bhavana, Visva-Bharati, Santiniketan - 731 235)
Dr
D.C. Biswas
(Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085)
Dr
S. Mukhopadhyay
(Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085)
Co-authors
Dr
A. Blanc
(ILL, 71 Avenue des Martyrs, 38042 Grenoble CEDEX 9, France)
Dr
C. A. Ur
(INFN Sezione di Padova, I-35131 Padova, Italy)
Dr
G. Simpson
(LPSC, 53 Avenue des Martyrs, 38026 Grenoble, France)
Dr
G.de France
(GANIL, BP 55027, F-14076 Caen Cedex 5, France)
Dr
L.S. Danu
(Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085)
Dr
M. Jentschel
(ILL, 71 Avenue des Martyrs, 38042 Grenoble CEDEX 9, France)
Dr
P. Mutti
(ILL, 71 Avenue des Martyrs, 38042 Grenoble CEDEX 9, France)
Dr
S. Leoni
(Università degli Studi di Milano, I-20133 Milano, Italy)
Dr
T. Soldner
(ILL, 71 Avenue des Martyrs, 38042 Grenoble CEDEX 9, France)
Dr
U. Köster
(ILL, 71 Avenue des Martyrs, 38042 Grenoble CEDEX 9, France)
Dr
W. Urban
(Faculty of Physics, University of Warsaw, PL 02-093 Warszawa, Poland)
