Abstract
The low-lying states of odd-odd 132 I, the 3p-3h nucleus with respect to the doubly magic 132 Sn, have been characterized from decay spectroscopy. The neutron rich Iodine and Tellurium isotopes have been produced as fission product of alpha-induced fission of 235 U and radiochemically separated. The life-time of the first excited state of 132 I have been precisely measured using LaBr3(Ce) scintillators from the decay of 132 Te. The IT decay of the high spin isomer (8 - ) in 132 I has been measured with a Low Energy Photon Spectrometer (LEPS) of segmented planar Ge detector.
Highlights
The structure of nuclei around the doubly magic neutron rich 132Sn (Z=50 and N=82) is of special importance and has been the topic of extensive experimental [1-3] and theoretical [4] research in recent years
The low lying level structure of 132I has been derived by the decay of 132Te [5]
The lifetime of the first excited state of 132I have been measured from the decay of 132Te, (T1/2=3.204 d) using LaBr3(Ce) scintillators
Summary
The structure of nuclei around the doubly magic neutron rich 132Sn (Z=50 and N=82) is of special importance and has been the topic of extensive experimental [1-3] and theoretical [4] research in recent years. The odd-odd nuclei in this mass region are of particular interest to understand the protonneutron residual interaction in the single particle orbits, available for the nuclei towards neutron-rich side. In this context, the studies on low-lying level structure of nuclei with a few identical valance particles or holes are important. Due to the presence of Ag-X rays (as contamination of fission products), which is 22 keV, the presence of this low energy transition could not be confirmed
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