Elsevier

Nuclear Physics A

Volume 234, Issue 1, 25 November 1974, Pages 185-215
Nuclear Physics A

Deformations and moments of inertia of actinide nuclei in the ground and shape isomeric states

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Abstract

Using a Woods-Saxon potential, equilibrium deformations are obtained by the Strutinsky shell-correction method. Deformation parameters β2 and β4 of the ground state and the shape isomeric state are extracted for all actinide nuclei. It is shown that the connection of β2 and β4 with the multipole moments Q2 and tQ4 is not so trivial as sometimes assumed in the literature. The moments of inertia — taken at the same deformations — are evaluated within the cranking model. Their dependence on deformation and temperature (excitation energy) is discussed; the rigid body values are demonstrated to be reached both for large deformations and large temperatures. Where available, experimental data are compared; the agreement is generally very good.

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    Present address: Niels Bohr Institut, Blegdamsvej 17, 2100 Copenhagen, Denmark.

    ††

    Present address: The Weizmann Institute of Science, Dept. of Nuclear Physics, Rehovot, Israel.

    †††

    Present address: Max-Planck-Institut für Kernphysik, Heidelberg, Germany.

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