Phys.Rev. C 97, 024306 (2018)

J.Konki, B.Sulignano, P.T.Greenlees, Ch.Theisen, K.Auranen, H.Badran, R.Briselet, D.M.Cox, F.Defranchi Bisso, J.Dobaczewski, T.Grahn, A.Herzan, R.-D.Herzberg, R.Julin, S.Juutinen, J.Khuyagbaatar, M.Leino, A.Lightfoot, J.Pakarinen, P.Papadakis, J.Partanen, P.Rahkila, M.Sandzelius, J.Saren, C.Scholey, Y.Shi, M.Smolen, J.Sorri, S.Stolze, J.Uusitalo

In-beam spectroscopic study of ²⁴⁴Cf

NUCLEAR REACTIONS ¹⁹⁸Pt(⁴⁸Ca, 2n), (⁴⁸Ca, 3n), E=207, 208, 211, 213 MeV; measured evaporation residues and σ for 2n and 3n channels by TOF and ΔE, excitation functions, Eγ, Iγ, γγ-coin, Eα, Iα, recoil-α, and recoil-α-γ correlated events, using RITU separator, GREAT spectrometer, JUROGAM-II array of 24 clover-type and 15 either Phase-I- or GASP-type Compton-suppressed Ge detectors at the K=130 MeV cyclotron facility of University of Jyvaskyla. Recoil-decay tagging method. ²⁴⁴Cf; deduced high-spin levels, J, π, yrast rotational band up to (20+), moment of inertia plots, Harris expansion used to deduce energies of the first 2+ and 4+ states. Comparison with available calculations. Systematics of yrast levels and moment of inertia in ²³⁸U, ²⁴⁰Pu, ²⁴²Cm, ²⁴⁴Cf and ²⁴⁶Fm.

RADIOACTIVITY ^243,244Cf(α)[from ¹⁹⁸Pt(⁴⁸Ca, 2n), (⁴⁸Ca, 3n), E=207, 208, 211, 213 MeV]; measured Eα, Iα, (recoil)α-coin, half-lives of ground states of ²⁴³Cf and ²⁴⁴Cf; deduced branching ratio for α-decay mode of ²⁴⁴Cf. Comparison with earlier experimental values.

doi: 10.1103/PhysRevC.97.024306