Abstract

Neutron capture cross sections are averaged over Maxwell-Boltzmann neutron distributions for temperatures pertinent to slow nucleosynthesis (s process) in red giant stars. Such cross sections, together with isotopic abundances, provide the major quantitative experimental tests of the theory. The cross sections are tabulated at convenient intervals from kT=5 keV to kT=90 keV where data are available. In many cases it has been possible to supplement the often fragmentary (as of June 1964) data with evidence from nuclear systematics.