Tuning the Re/Os Clock: Stellar-Neutron Cross Sections
Mengoni, A. ; Mosconi, M. ; Fujii, K. ; Käppeler, F.
In: Publications of the Astronomical Society of Australia, 2009, vol. 26, no. 3, p. 250-254
Ajouter à la liste personnelle- Summary
- The neutron-capture cross sections of 186,187Os have been recently measured at the CERN neutron time-of-flight facility n_TOF for an improved evaluation of the Re/Os cosmo-chronometer. This experimental information was complemented by nuclear model calculations for obtaining the proper astrophysical reaction rates at s-process temperatures. The calculated results and their implications for the determination of the time-duration of nucleosynthesis during galactic chemical evolution is discussed