Shape and structure of N=Z 64Ge; Electromagnetic transition rates from the application of the Recoil Distance Method to knock-out reaction

Abstract

Transition rate measurements are reported for the first and the second 2+ states in N=Z 64Ge. The experimental results are in excellent agreement with large-scale Shell Model calculations applying the recently developed GXPF1A interactions. Theoretical analysis suggests that 64Ge is a collective gamma-soft anharmonic vibrator. The measurement was done using the Recoil Distance Method (RDM) and a unique combination of state-of-the-art instruments at the National Superconducting Cyclotron Laboratory (NSCL). States of interest were populated via an intermediate-energy single-neutron knock-out reaction. RDM studies of knock-out and fragmentation reaction products hold the promise of reaching far from stability and providing lifetime information for excited states in a wide range of nuclei.

References in corpus (4)

• New effective interaction for $pf$-shell nuclei and its implications for the stability of the $N$=$Z$=28 closed core
• Shape transition and oblate-prolate coexistence in N=Z fpg-shell nuclei
• Accuracy of B(E2; 0+ -> 2+) transition rates from intermediate-energy Coulomb excitation experiments
• Application of the Time of Flight Technique for Lifetime Measurements with Relativistic Beams of Heavy Nuclei

Cited by in corpus (10)

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• Observation of mutually enhanced collectivity in self-conjugate ${}_{38}^{76}$Sr${}_{38}$
• Collectivity at N=50: 82Ge and 84Se
• Unified BCS-like model of pairing and alpha-correlations
• Gamow-Teller transitions to 64-Cu measured using the 64-Zn(t,3-He) reaction
• Electromagnetic properties of ${}^{21}$O for benchmarking nuclear Hamiltonians
• Search for the $\alpha$ + core structure in the ground state bands of $22\le Z\le 42$ even-even nuclei
• Shell model results for $T=1$ and $T=0$ bands in ${}^{66}$As