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Coulomb excitation of $^{78}$Kr

Abstract : The Kr isotopes are considered to be among the best cases for shape coexistence studies in the mass A$\sim$70 region. Our campaign to investigate in detail the development of the shape coexistence in the neutron deficient Kr isotopes was started with the stable nucleus $^{78}$Kr. To obtain the information about the intrinsic shape, Coulomb excitation experiments were performed. A total of 26 matrix elements were determined for $^{78)$Kr. Simple geometrical and algebraic models do not reproduce all details of the electromagnetic structure. A good interpretation of the complex structure of the nucleus with competing oblate and prolate shapes comes from a study within the complex EXCITED VAMPIR approximation using Hartree–Fock–Bogoliubov transformations with symmetry projection before variation. The measured matrix elements are compared with the predictions of this model.
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http://hal.in2p3.fr/in2p3-00025977
Contributor : Michel Lion <>
Submitted on : Thursday, April 20, 2006 - 9:48:56 AM
Last modification on : Wednesday, January 31, 2018 - 12:29:46 PM

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F. Becker, A. Petrovici, J. Iwanicki, N. Amzal, W. Korten, et al.. Coulomb excitation of $^{78}$Kr. Nuclear Physics A, Elsevier, 2006, 770, pp.107-125. ⟨10.1016/j.nuclphysa.2006.01.018⟩. ⟨in2p3-00025977⟩

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