Electromagnetic sum rules for light nuclei

Electromagnetic sum rules describe gross features of the electromagnetic structure of nuclei 1). A well known example is the Thomas-Reiche-Kuhn (TRK) sum rule, which relates the integrated total El-absorption cross section to the ground state expectation value of the double commutator of the dipole operator D with the nuclear Hamiltonian. While the k inet ic energy gives a model independent contr ibut ion, i . e . , the classical sum rule ~cl = 60 NZ/A MeV mb, the nuclear twobody potential gives an additional contr ibution in the presence of exchange and/or momentum dependent (or nonlocal) forces. In this case, I

A two-center-oscillator-basis as an alternative set for heavy ion processes

The two-center-oscillator-basis, which is constructed from harmonic oscillator wave functions developing about two different centers, suffers from numerical problems at small center separations due to the overcompleteness of the set. In order to overcome these problems we admix higher oscillator wave functions before the orthogonalization, or antisymmetrization resp. This yields a numerically stable basis set at each center separation. The results obtained for the potential energy surface are comparable with the results of more elaborate models.

An exponential spline interpolation for unequally spaced data points

3He electron scattering sum rules

Electron scattering sum rules for3He are derived with a realistic ground-state wave function. The theoretical results are compared with the experimentally measured integrated cross sections.

Effects of wave function correlations on scaling violation in quasi-free electron scattering

Abstract The scaling law in quasi-free electron scattering is broken due to the existence of exchange forces, leading to a finite mean value of the scaling variable y . This effect is considerably increased by wave function correlations, in particular by tensor correlations, similar to the case of the photonuclear enhancement factor κ.

An exponential spline interpolation for unequally spaced data points

Title of program: LSPLIN Catalogue Id: AAOW_v1_0 Nature of problem Quite often it is necessary to interpolate discrete points given in an interval (x1,xn) to some intermediate point x*epsilon(x1,xn) in such a way that one avoids spurious oscillations. Versions of this program held in the CPC repository in Mendeley Data AAOW_v1_0; LSPLIN; 10.1016/0010-4655(82)90062-5 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)