Stryjczyk, M, Andel, B, Andreyev, AN, Cubiss, J, Pakarinen, J, Rezynkina, K, Van Duppen, P, Antalic, S, Berry, T, Borge, MJG et al (show 38 more authors)
(2020)
Decay studies of the long-lived states in <SUP>186</SUP>Tl.
PHYSICAL REVIEW C, 102 (2).
024322-.
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Abstract
Decay spectroscopy of the long-lived states in $^{186}$Tl has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The $\alpha$ decay from the low-spin $(2^-)$ state in $^{186}$Tl was observed for the first time and a half-life of $3.4^{+0.5}_{-0.4}$ s was determined. Based on the $\alpha$-decay energy, the relative positions of the long-lived states were fixed, with the $(2^-)$ state as the ground state, the $7^{(+)}$ state at 77(56)~keV and the $10^{(-)}$ state at 451(56) keV. The level scheme of the internal decay of the $^{186}$Tl($10^{(-)}$) state ($T_{1/2} = 3.40(9)$ s), which was known to decay solely through emission of 374 keV $\gamma$-ray transition, was extended and a lower-limit for the $\beta$-decay branching $b_\beta > 5.9(3)\%$ was determined. The extracted retardation factors for the $\gamma$ decay of the $10^{(-)}$ state were compared to the available data in neighboring odd-odd thallium isotopes indicating the importance of the $\pi d_{3/2}$ shell in the isomeric decay and significant structure differences between $^{184}$Tl and $^{186}$Tl.
| Item Type: | Article |
|---|---|
| Additional Information: | 10 pages, 12 figures |
| Uncontrolled Keywords: | nucl-ex, nucl-ex |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 05 Aug 2020 10:26 |
| Last Modified: | 09 Oct 2023 00:44 |
| DOI: | 10.1103/PhysRevC.102.024322 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3096443 |
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