92,909 research outputs found
Short-range correlations in finite nuclear systems
Recent results concerning the use of the Correlated Basis Function to
investigate the ground state properties of medium-heavy doubly magic nuclei
with microscopic interactions are presented. The calculations have been done by
considering a Short-Range Correlation between nucleons. The possibility of
identifying effects produced by Short-Range Correlations in electromagnetically
induced phenomena is discussed.Comment: 12 pages, 10 Postscript figures, Contribution to the International
Workshop on Nuclear Theory, Rila Mountains, Bulgaria 10 to June 15, 200
Random Phase Approximation and neutrino-nucleus cross sections
The Random Phase Approximation theory is used to calculate the total cross
sections of electron neutrinos on C nucleus. The role of the excitation
of the discrete spectrum is discussed. A comparison with electron scattering
and muon capture data is presented. The cross section of electron neutrinos
coming from muon decay at rest is calculated.Comment: 6 pages, 5 eps figures, Presented at the XX Max Born Symposium,
Wroclaw (Poland
Model calculations of doubly closed shell nuclei in CBF theory III. j-j coupling and isospin dependence
Correlated Basis Function theory and Fermi Hypernetted Chain technique are
extended to study medium-heavy, doubly closed shell nuclei in j-j coupling
scheme, with different single particle wave functions for protons and neutrons
and isospin dependent two-body correlations. Central semirealistic interactions
are used. Ground state energies, one-body densities, distribution functions and
momentum distributions are calculated for 12C, 16O, 40Ca, 48Ca and 208Pb
nuclei. The values of the ground state energies provided by isospin dependent
correlations are lower than those obtained with isospin independent
correlations. In finite nuclear systems, the two--body Euler equations provide
correlation functions variationally more effective than those obtained with the
same technique in infinite nuclear matter.Comment: 29 Latex pages plus 6 Postscript figure
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