Prompt and delayed spectroscopy of <SUP>203</SUP>At: Observation of a shears band and a 29/2<SUP>+</SUP> isomeric state



Auranen, K, Uusitalo, J, Juutinen, S, Badran, H, Bisso, F Defranchi, Cox, D, Grahn, T, Greenlees, PT, Herzan, A, Jakobsson, U
et al (show 16 more authors) (2018) Prompt and delayed spectroscopy of <SUP>203</SUP>At: Observation of a shears band and a 29/2<SUP>+</SUP> isomeric state. PHYSICAL REVIEW C, 97 (2). 024301-.

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Abstract

Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of At203(N=118) significantly. We have observed an isomeric [τ=14.1(3)μs] state with a spin and parity of 29/2+. The isomeric state is suggested to originate from the π(h9/2) - |Po202;11-) coupling, and it is depopulated through 286 keV E2 and 366 keV E3 transitions. In addition, we have observed a cascade of magnetic-dipole transitions which is suggested to be generated by the shears mechanism.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 15 Mar 2018 11:25
Last Modified: 16 Mar 2024 01:55
DOI: 10.1103/PhysRevC.97.024301
Open Access URL: http://urn.fi/URN:NBN:fi:jyu-201802061432
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3019054