Measurement of the (gamma,n) reaction rates of the nuclides Pt-190, Pt-192, and Pt-198 in the astrophysical gamma process - art. no. 055802

Authors
Vogt, K Mohr, P Babilon, M Enders, J Hartmann, T Hutter, C Rauscher, T Volz, S Zilges, A
Citation
K. Vogt et al., Measurement of the (gamma,n) reaction rates of the nuclides Pt-190, Pt-192, and Pt-198 in the astrophysical gamma process - art. no. 055802, PHYS REV C, 6305(5), 2001, pp. 5802
Citations number
37
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C
ISSN journal
05562813 → ACNP
Volume
6305
Issue
5
Year of publication
2001
Database
ISI
SICI code
0556-2813(200105)6305:5<5802:MOT(RR>2.0.ZU;2-O
Abstract
The nucleosynthesis of heavy neutron-deficient nuclei in a stellar photon b ath at the temperatures relevant for the astrophysical gamma process was in vestigated. In order to derive (gamma ,n) cross sections and reaction rates , the stellar photon bath was simulated by the superposition of several bre msstrahlung spectra with different endpoint energies. As a first test for t his 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 experime ntal data and theoretical calculations.