Phys.Rev. C 85, 014309 (2012)

U.Jakobsson, J.Uusitalo, S.Juutinen, M.Leino, T.Enqvist, P.T.Greenlees, K.Hauschild, P.Jones, R.Julin, S.Ketelhut, P.Kuusiniemi, M.Nyman, P.Peura, P.Rahkila, P.Ruotsalainen, J.Saren, C.Scholey, J.Sorri

Recoil-decay tagging study of ²⁰⁵Fr

NUCLEAR REACTIONS ¹⁶⁹Tm(⁴⁰Ar, 4n), E=180 MeV; measured Eγ, Iγ, ce, delayed γ, γγ-, αγ-, γ(particle)-, ceγ-coin, γ(t), γ(θ), half-lives of isomers, recoil decay tagging method using JUROGAM array and GREAT spectrometer at JYFL. ²⁰⁵Fr; deduced levels, J, π, bands, isomers, configurations. Systematics of negative-parity states in odd-mass (N=118-126) francium nuclei and yrast and near-yrast positive-parity states in their even-mass (N=112-126) radon isotones.

RADIOACTIVITY ²⁰⁵Fr(IT)[from ¹⁶⁹Tm(⁴⁰Ar, 4n), E=180 MeV]; measured Eγ, Iγ, ce; deduced levels, J, π, isomer half-life. ²⁰⁰At, ^204,205Fr(α); measured Eα, ce. ²⁰¹At, ²⁰⁶Fr, ^204,205,206Rn(α); measured Eα.

doi: 10.1103/PhysRevC.85.014309