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The reaction rate sensitivity of nucleosynthesis in type II supernovae
(1999-08-20)
We explore the sensitivity of the nucleosynthesis of intermediate-mass elements (28 less than or equal to A less than or similar to 80) in supernovae derived from massive stars to the nuclear reaction rates employed in the ...
The astrophysical r-process : A comparison of calculations following adiabatic expansion with classical calculations based on neutron densities and temperatures
(1999-05-01)
The rapid neutron-capture process (r-process) encounters unstable nuclei far from beta-stability. Therefore its observable features, like the abundances, witness (still uncertain) nuclear structure as well as the conditions ...
Explosive nucleosynthesis close to the drip lines
(1998-11)
We give an overview of explosive burning and the role which neutron and/or proton separation energies play. We focus then on the rapid neutron capture process (r-process) which encounters unstable nuclei with neutron ...
Explosive H-burning, the rp-process, and X-ray bursts
(IOP Publishing Ltd., 1998)
The major astrophysical events which involve explosive H-burning are novae and type I X-ray bursts. Both are related to binary stellar systems with hydrogen accretion from a binary companion onto a compact object, and the ...
Astrophysical and nuclear physics aspects of the r-process
(World Scientific Publishing, 1998)
The formation of elements as heavy as Th and U and beyond is due to the rapid neutron-capture process (r-process), which causes the production of highly unstable nuclei near the neutron drip-line and functions via neutron ...
Explosive nucleosynthesis and the astrophysical r-process
(American Institute of Physics (AIP), 1998)
We give an overview of chemical equilibria in explosive burning and the role which neutron and/or proton separation energies play. We focus then on the rapid neutron-capture process (r-process) which encounters unstable ...
Nucleosynthesis at the proton drip line - a challenge for nuclear physics
(American Institute of Physics (AIP), 1998)
The rp-process in X-ray bursts is investigated using a complete and updated nuclear reaction network from H to Sr, that is coupled to a one dimensional, one zone X-ray burst model. In particular we consider 2p-capture ...
Global statistical model calculations and the role of isospin
(IOP Publishing Ltd., 1998)
An improved code for the calculation of astrophysical reaction rates in the statistical model is presented. It includes the possibility to study isospin effects. Such effects heavily affect rates involving self-conjugate ...
Nuclear level density and the determination of thermonuclear rates for astrophysics
(1997-09)
The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. In recent calculations the nuclear level density-as an important ingredient to the statistical model ...
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) ...