Original scientific paper

Collective and single-particle structures in neutron-rich nuclei

J. H. Hamilton (GANDS collaborations) ; Physics Department, Vanderbilt University, Nashville, TN 37235, U. S. A.
S. J. Zhu ; Physics Department, Vanderbilt University, Nashville, TN 37235, U. S. A.; bDepartment of Physics, Tsinghua University, Beijing 100084, China; Joint Institute for Heavy Ion Research, Oak Ridge, TN 37830, U. S. A.
Y. X. Luo ; Physics Department, Vanderbilt University, Nashville, TN 37235, U. S. A.; Joint Institute for Heavy Ion Research, Oak Ridge, TN 37830, U. S. A.; Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U. S. A.
J. K. Hwang ; Physics Department, Vanderbilt University, Nashville, TN 37235, U. S. A.
A. V. Ramayya ; Physics Department, Vanderbilt University, Nashville, TN 37235, U. S. A.
P. M. Gore ; Physics Department, Vanderbilt University, Nashville, TN 37235, U. S. A.
J. O. Rasmussen

Abstract

The neutron-rich nuclei of 104,106Mo, 139,141Ba, 139Xe, 115,117Ag and 133,135Te have been studied by using the spontaneous fission source of 252Cf with the Gammasphere array. In the present work, the collective and single particle structures in these neutron-rich nuclei have been reported. Gamma type vibrational bands in 104,106Mo, particle and hole states, including candidates for tilted rotor bands in 133,135Te and a 7/2[413] rotational band in both 115,117Ag have been observed. The N = 83 135Te and 139Ba show marked differences associated with differences in their particle and hole states. New levels in 141Ba and 139Xe extend evidence for two opposite parity doublets characteristic of stable octupole deformation.

Keywords

neutron-rich nuclei; fission; tilted rotor bands; particle-hole states

Hrčak ID:

305215

URI

https://hrcak.srce.hr/305215

Publication date:

4.5.2003.

Article data in other languages: croatian

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