A density-dependent $\delta$ interaction is used to calculate pairing matrix elements for actinide proton and neutron orbitals. Tables of the matrix elements are given. The Seniority-one spectra of odd-mass actinides are analyzed in terms of these matrix elements. Several features of actinide spectra that cannot be understood with constant pairing matrix elements are explained with the density-dependent matrix elements.

NUCLEAR STRUCTURE Density-dependent $\delta$ interaction; pairing matrix elements; actinides; calculated single particle levels; deduced deformations.

• Received 28 June 1976

DOI:https://doi.org/10.1103/PhysRevC.14.1935