Parr, E, Smith, JF, Greenlees, PT, Smolen, M, Papadakis, P, Auranen, K, Chapman, R, Cullen, DM, Grahn, T, Grocutt, L et al (show 26 more authors)
(2016)
Identification of the <i>J</i><SUP>π</SUP>=1<SUP>-</SUP> state in <SUP>218</SUP>Ra populated via α decay of <SUP>222</SUP>Th.
PHYSICAL REVIEW C, 94 (1).
014307-.
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Abstract
The α decay of Th222 populating the low-lying Jπ=3- state, and also a proposed 1- state, in Ra218 has been observed. The observations suggest an excitation energy of 853 keV for the 1- state, which is 60 keV above the 3- state. The hindrance factors of these α decays give a possible boundary to the region of ground-state octupole deformation in the light-actinide nuclei. The relative positions of the Jπ=1- and 3- states suggest they are produced by an octupole-vibrational mechanism, as opposed to α clustering or rotations of a reflection-asymmetric octupole-deformed shape.
Item Type: | Article |
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Uncontrolled Keywords: | 5106 Nuclear and Plasma Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences |
Depositing User: | Symplectic Admin |
Date Deposited: | 28 Jul 2016 14:38 |
Last Modified: | 21 Jun 2024 03:36 |
DOI: | 10.1103/PhysRevC.94.014307 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3002611 |