Аннотация
The nucleosynthesis of heavy neutron-deficient nuclei in a stellar
photon bath at the temperatures relevant for the astrophysical gamma
process was investigated. In order to derive (gamma ,n) cross sections
and reaction rates, the stellar photon bath was simulated by the
superposition of several bremsstrahlung spectra with different endpoint
energies. As a first test for this method, the (gamma ,n) reaction rates
of the platinum isotopes Pt-190, Pt-192, and Pt-198 were derived. The
results are compared to other experimental data and theoretical
calculations.
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