Phys.Rev. C 93, 064309 (2016)

V.Margerin, G.J.Lane, G.D.Dracoulis, N.Palalani, M.L.Smith, A.E.Stuchbery

Spectroscopy and high-spin structure of ²¹⁰Fr : Isomerism and potential evidence for configuration mixing

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁸O, 5n), E=97 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), out-of-beam γ spectra, half-lives of isomers by γγ(t) using CAESAR array at ANU accelerator facility. ²¹⁰Fr; deduced levels, isomers, J, π, total conversion coefficients from intensity balances, configurations, multipolarities, B(E1), B(E2), B(E3), B(M1), B(M2), configuration mixing. Systematics of level structures, B(E1), B(M2), B(E3), and 10- isomers in neighboring Fr, Bi and At isotopes. Comparisons with semiempirical shell-model calculations.

NUCLEAR STRUCTURE ²⁰⁵Pb, ^{209,210,211,212}Fr; calculated levels, J, π, transition probabilities using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.064309