In-beam and $\alpha$-decay studies of $^{180}$Tl
ORAL
Abstract
We have carried out new spectroscopy studies of the $^{180}$Tl nuclide, in which a large electron-capture delayed fission branch was recently observed [1], by utilizing the $^{89}$Y + $^{92}$Mo symmetric reaction and the Argonne Fragment Mass Analyzer (FMA), in conjunction with the recoil-decay tagging technique. Prompt $\gamma$ rays were detected at the target position by Gammasphere and these were subsequently correlated with $\alpha$ decays measured using a Double-sided Silicon Strip Detector (DSSD) at the focal plane of FMA. In addition, an array of four Ge clover detectors surrounded the DSSD, thus allowing $\alpha-\gamma$ coincidences to be recorded. The obtained new results for $^{180}$Tl will be presented, together with those for the daughter nuclide $^{176}$Au.\\[4pt] [1] A.N. Andreyev et al., Phys. Rev. Lett. 105, 252502 (2010).
*This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357.
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