Khuyagbaatar, J, Yakushev, A, Duellmann, Ch E, Ackermann, D, Andersson, L-L, Block, M, Brand, H, Cox, DM, Even, J, Forsberg, U et al (show 29 more authors)
(2015)
New Short-Lived Isotope U-221 and the Mass Surface Near N=126.
PHYSICAL REVIEW LETTERS, 115 (24).
242502-.
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Abstract
Two short-lived isotopes 221U and 222U were produced as evaporation residues in the fusion reaction 50Ti+176Yb at the gas-filled recoil separator TASCA. An α decay with an energy of Eα=9.31(5) MeV and half-life T1/2=4.7(7) μs was attributed to 222U. The new isotope 221U was identified in α-decay chains starting with Eα=9.71(5) MeV and T1/2=0.66(14) μs leading to known daughters. Synthesis and detection of these unstable heavy nuclei and their descendants were achieved thanks to a fast data readout system. The evolution of the N=126 shell closure and its influence on the stability of uranium isotopes are discussed within the framework of α-decay reduced width.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 5106 Nuclear and Plasma Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 21 Apr 2017 13:17 |
| Last Modified: | 21 Jun 2024 03:36 |
| DOI: | 10.1103/PhysRevLett.115.242502 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3007063 |
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