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Now showing items 11-18 of 18
Applicability of the Hauser-Feshbach approach for the determination of astrophysical reaction rates
(1997-08-04)
Nuclear Astrophysics requires the knowledge of reaction rates over a wide range of nuclei and temperatures. In recent calculations the nuclear level density – as an important ingredient to the statistical model (Hauser-Feshbach) ...
Uncertainties in direct neutron capture calculations due to nuclear structure models
(1997-08-04)
The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. For spherical nuclei close to the dripline the statistical model (Hauser-Feshbach) approach is not applicable ...
Neutron-rich isotopes Ti-54-57
(1996-12)
The neutron-rich isotopes Ti-54-57 and Cr-58-60 are produced by fragmentation of a 64.5 MeV/nucleon Cu-65(26+) beam in a 90 mg/cm(2) Be-9 target. Following particle identification by energy loss and time of flight, the ...
Direct neutron capture for magic-shell nuclei
(1996-01)
In neutron capture for magic-shell nuclei the direct reaction mechanism can be important and may even dominate. As an example we investigated the reaction Ca-48(n, gamma)Ca-49 for projectile energies below 250 keV in a ...
Study of short-lived silver isotopes with a laser ion-source
(1995-03)
A chemically selective laser ion source based on resonance ionization of atoms in a hot cavity has been applied for the study of short-lived silver isotopes at CERN/ISOLDE. Silver atoms were ionized by two resonant excitations ...
Theoretical neutron-capture cross sections for r-process nucleosynthesis in the Ca-48 region
(Editions Frontieres, 1995)
Beta-decay studies of neutron-rich Sc, Ti, V, Cr
(Editions Frontieres, 1995)
Astrophysics and nuclei far from stabilitys
(1994-03)
We discuss unstable nuclei on the proton-rich and neutron rich side of stability and their properties of astrophysical relevance. The Coulomb barriers in charged-particle captures lead to a cycle pattern which is not ...