Coulomb excitation of 66ge
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Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Western Cape
Abstract
The Coulomb excitation of 66Ge has been performed for the rst time using \safe"
bombarding energies at the HIE-ISOLDE facility at CERN in July 2017. A particle-
coincidence experiment using the MINIBALL array and double-sided silicon detectors
has allowed the determination of transitional and diagonal matrix elements in 66Ge,
yielding new measurements of the reduced transition probability connecting the ground
state, 0+1
, and the rst excited state, 2+1
, or B(E2; 2+1
! 0+1
) value, and the spectroscopic
quadrupole moment of the 2+1
state, QS (2+1
). A relatively large B(E2) = 29:4(30) W.u.
has been extracted using beam-gated data at forward angles { less sensitive to secondorder
e ects { as compared with the adopted value of 16:9(7) W.u., but in closer agreement
with modern large-scale shell-model calculations using a variety of e ective interactions
and beyond-mean eld calculations presented in the current work.
Description
Philosophiae Doctor - PhD
Keywords
Coulomb excitation, Reorientation effect, Shape coexistence, Neutron-de cient nuclei