Stellar s-process neutron capture cross sections on A-Se and A-Ce

Abstract

We report on experiments at the Soreq Applied Research Accelerator Facility - Liquid-Lithium Target (SARAF-LiLiT) laboratory dedicated to the study of s-process neutron capture reactions. The kW-power proton beam at 1.92 MeV (1-2 mA) from SARAF Phase I yields high-intensity 30 keV quasi-Maxwellian neutrons (3-5x10^10 n/s). The high neutron intensity enables Maxwellian averaged cross sections (MACS) measurements of samples with short-lived decay products. Neutron capture reactions on nat-Se and nat-Ce were investigated by activation in the LiLiT neutron beam and γ-spectrometry measurements of their decay products.

5 Pages, 4 Figures, 1 Table. Preliminary results arxiving, see also R.N. Sahoo et al., Phys. Rev. C 109, 025808 (2024); https://doi.org/10.1103/PhysRevC.109.025808