Phys.Rev. C 102, 044312 (2020)

J.Khuyagbaatar, F.P.Hessberger, S.Hofmann, D.Ackermann, H.G.Burkhard, S.Heinz, B.Kindler, I.Kojouharov, B.Lommel, R.Mann, J.Maurer, K.Nishio

α decay of ²⁴³Fm₁₄₃ and ²⁴⁵Fm₁₄₅, and of their daughter nuclei

RADIOACTIVITY ²⁴⁵Fm(α)[from ²⁰⁸Pb(⁴⁰Ar, 3n), E=192 MeV]; ²⁴³Fm(α)[from ²⁰⁶Pb(⁴⁰Ar, 3n), E=185-204 MeV]; ²⁴¹Cf(α)[from ²⁴⁵Fm α]; ²³⁹Cf(α)[from ²⁴³Fm α]; ²³⁵Cm(α)[from ²⁴¹Cf α]; measured evaporation residues (ER), Eα, Iα, (ER)α-α-correlations for ²⁴³Fm decay chain, Eγ from ²⁴¹Cf decay, half-lives of the decays of ²⁴³Fm, ²³⁹Cf and ²³⁵Cm, the ²⁴⁵Fm and ²⁴³Fm activities separated using the SHIP separator at the GSI facility, and implanted into a position sensitive 16-strip Si detector, with six additional silicon detectors as the stop detector. ²⁴⁵Fm(α), (EC), (SF); deduced branching ratios, with upper limits for ϵ and SF modes, HF for α. ²⁴³Fm(α), (EC), (SF); deduced branching ratios, with upper limit for ϵ mode, HF for α. ^239,241Cf, ²³⁵Cm(α), (EC); deduced branching ratios, HF for α. ^239,241Cf, ²³⁷Cm; deduced one tentative level each, J, π, total internal conversion coefficient and multipolarity of a γ ray in ²³⁷Cm, Nilsson configurations. ^243,245Es, ²⁴⁶Fm(α); measured Eα.

doi: 10.1103/PhysRevC.102.044312