Search for one- and two-phonon octupole vibrational states in the spherical nuclei near 132Sn
Abstract
Excited high spin states in 135I, 136Xe, 137Cs, 138Ba, 139La, 140Ce and 142Nd with N = 82 are reorganized and interpreted in a different way to find one- phonon octupole vibrational (POV) bands. Two nearly identical (similar) bands with ΔI = 3 are found in these nuclei. From the presence of two nearly identical excited bands with ΔI = 3 in these nuclei, one-POV bands are proposed. Also, high spin states of 134Sb, 134,135Te, 135,136I, 137Xe and 139Ba near 132Sn are reanalyzed in order to search for one- and two-POV states. New spins and parities are tentatively assigned to the 2203.9 keV state in 137Xe and the 1976.6 and 2091.7 keV states in 139Ba from the state energy plots of the N = 82 and 83 nuclei. High spin states of 134Sb, 134,135Te, 135,136I, 137Xe and 139Ba connected by E1, E3 /M2 and E3 transitions are proposed, for the first time, as zero-, one- and two-POV states. One- and two-POV states in 134Sb and 135Te are built on a 7- (πg7/2 ν f7/2) state and a 19 /2- (νf7/2 ⊗ 61+)state, respectively. One-POV states built on the 19 /2- (ν f7/2 ⊗ 61+)and the 21 /2- (νh9/2 ⊗ 62+)states coexist in 137Xe. Then, one- and two-POV states in 139Ba are built only on the 21 /2- (νh9/2 ⊗ 62+)state. One- and two-POV states in 134Te are built on the 62+state with some mixing with the 61+state.
- Publication:
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APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- October 2013
- Bibcode:
- 2013APS..DNP.KH006H