... moment

The statement that the nucleus has octupole and quadrupole deformation really refers to its intrinsic state, a concept we elaborate on below, and does not contradict its insensitivity to applied electric fields with multipolarity greater than one.

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... variable

We performed another test, using the direct part of Eq. (10) with the valence wave function taken from the Nilsson model just described, but with the neutron and protons densities assumed to have more realistic Wood-Saxon forms. The direct terms were again suppressed by factors of 1.5 to almost 10 that depended significantly on the valence orbit.

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