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Nuclear Astrophysics
(2001-12)
Mo-92(alpha,alpha)Mo-92 scattering, the Mo-92-alpha optical potential, and the Ru-96(gamma,alpha)Mo-92 reaction rate at astrophysically relevant energies
(2001-12)
The elastic scattering cross section of (MO)-M-92(alpha,alpha)Mo-92 has been measured at energies of E-c.m. approximate to 13, 16, and 19 MeV in a wide angular range. The real and imaginary parts of the optical potential ...
Proton capture cross section of Sr isotopes and their importance for nucleosynthesis of proton-rich nuclides
(2001-12)
The (p,gamma) cross sections of three stable Sr isotopes haven been measured in the astrophysically relevant energy range. These reactions are important for the p process in stellar nucleosynthesis and, in addition, the ...
Cross section measurements of the Nb-93(p,gamma)Mo-94 reaction at E-p=1.4-4.9 MeV relevant to the nucleosynthetic p process
(2001-11)
In-beam cross section measurements of the Nb-93(p,gamma)Mo-94 reaction have been carried out at E-p = 1.4-4.9 MeV, by using high efficiency high-purity Ge detectors, partly with BGO shields for Compton background suppression. ...
Tables of nuclear cross sections and reaction rates : An addendum to the paper "Astrophysical reaction rates from statistical model calculations"
(2001-09)
In a previous publication (ATOMIC DATA AND NUCLEAR DATA TABLES 75, 1 (2000)), we gave seven-parameter analytical fits to theoretical reaction rates derived from nuclear cross sections calculated in the statistical model ...
s-process branchings at Sm-151, Eu-154, and Dy-163
(2001-07)
The (n, gamma) cross sections of the stable europium isotopes Eu-151 and Eu-153 have been measured by irradiating oxide samples in a quasistellar neutron spectrum. From the induced activities, the stellar cross sections ...
The endpoint of the rp-process on accreting neutron stars
(2001-05-21)
We find that the rp process in X-ray bursts and in steady state burning, for example in X-ray pulsars, ends in a SnSbTe cycle. We discuss the consequences for the neutron star crust composition an X-ray burst light curves.
Proton capture cross section of Sr isotopes
(2001-05-21)
The (p,gamma) cross section of Sr-84,Sr-86,Sr-87 isotopes has been measured using activation technique in the proton energy range between 1.5 and 3 MeV. These reactions are relevant to the p-process of stellar nucleosynthesis ...
Nucleosynthesis in massive stars revisited
(2001-05-21)
We have performed the first calculations to follow the evolution of all stable nuclei and their radioactive progenitors in a finely-zoned stellar model computed from the onset of central hydrogen burning through explosion ...
Improving explosive nucleosynthesis models via (n,alpha) measurements
(2001-05-21)
In explosive environments, (gamma,alpha) reactions constitute some of the most important links in the nucleosynthesis chains. However. it is very unlikely that the rates for most of these reactions will be determined by ...