Coulomb Excitation of <sup>74</sup>Ge

ORAL

Abstract

The electromagnetic properties of low-lying states in 74Ge have been investigated using a multi-step Coulomb excitation measurement carried out at the ATLAS facility of the Argonne National Laboratory. The experimental setup consisted of the GRETINA multidetector array coupled to the heavy-ion counter, CHICO2. This coupling allowed for precise Doppler correction and clean kinematic separation of the scattered particles. The quadrupole collectivity and triaxiality of the ground-state and quasi-gamma bands -- which were Coulomb excited to spins 8+ and 4+, respectively -- have been investigated in the framework of the generalized triaxial rotor model and the spherical shell model. Preliminary results from the analysis will be presented in the context of similar studies performed for the neighboring 72,76Ge [1,2] nuclei.

[1] A. D. Ayangeakaa, et. al. PLB 754, 254-259 (2016)

[2] A. D. Ayangeakaa, et. al. PRL 123, 102501 (2019)

*This work was supported by Grants No. DEFG02-97ER41041 (UNC) and No. DE-FG02-97ER41033 (TUNL)

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Presenters

  • Nirupama Sensharma

    • Argonne National Laboratory

Authors

  • Nirupama Sensharma

    • Argonne National Laboratory

  • Akaa D Ayangeakaa

    • University of North Carolina at Chapel Hill, TUNL

  • Tyler M Kowalewski

    • University of North Carolina at Chapel Hill, TUNL

  • Robert V Janssens

    • University of North Carolina at Chapel Hill, TUNL

  • Qibo B Chen

    • East China Normal University

  • Scott R Carmichael

    • University of Notre Dame

  • Michael P Carpenter

    • Argonne National Laboratory

  • M. Devlin

    • Los Alamos National Laboratory

  • Claus Mueller Gatermann

    • Argonne National Laboratory

  • D. J Hartley

    • United States Naval Academy

  • Jacob Heery

    • University of Surrey

  • Jack Henderson

    • University of Surrey

  • Heshani Jayatissa

    • Los Alamos National Laboratory

  • Samantha R Johnson

    • University of North Carolina at Chapel Hill, TUNL

  • Stanimir P Kisyov

    • Lawrence Livermore Natl Lab

  • Filip G Kondev

    • Argonne National Laboratory

  • Torben Lauritsen

    • Argonne National Laboratory

  • Walter Reviol

    • Argonne National Laboratory

  • Marco Rocchini

    • University of Guelph

  • E. Rubino

    • Facility for Rare Isotope Beams, Michigan State University

  • Ching-Yen Wu

    • Lawrence Livermore Natl Lab

  • Antonella Saracino

    • University of North Carolina at Chapel Hill, TUNL

  • Dariusz Seweryniak

    • Argonne National Laboratory

  • Marco Siciliano

    • Argonne National Laboratory