Contrasting Behavior in Octupole Structures Observed at High Spin in Ra-220 and Th-222
Aug 7, 1995
3 pages
Published in:
- Phys.Rev.Lett. 75 (1995) 1050-1053
Citations per year
Abstract: (APS)
Alternating-parity states connected by strong E1 transitions, characteristic of a reflection-asymmetric rotor, have been observed to high spins in the isotones 220Ra and 222Th. This level structure is observed up to Jπ=29−31− in 220Ra while it cannot be seen beyond J+=24+25− in 222Th. These observations are consistent with Woods-Saxon-Bogolyubov cranking calculations which predict that the yrast band of 222Th will undergo a shape transition at J=24ħ, in contrast to that of 220Ra which maintains its reflection asymmetry to higher spins.- 23.20.Lv
- 21.10.Re
- 21.60.Ev
- 27.90.+b
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