"The Israeli Joint Nuclear Physics Seminars: Nuclear Physics and Astrophysics at SARAF"

Mon, 22/06/201514:50-15:20
The Shwartz auditorium, at Soreq Nuclear Research Center (SNRC), Yavne
Lecturer: Mr. Moshe Tessler Affiliation: Racah Institute of Physics, The Hebrew University of Jerusalem Abstract: A high-power Liquid-Lithium Target (LiLiT) was used for the first time for neutron production via the thick-target 7Li(p,n)7Be reaction and quantitative determination of neutron capture cross sections. Bombarded with a 1-2 mA proton beam at 1.92 MeV from the Soreq Applied Research Accelerator Facility (SARAF), the setup yields a 30-keV quasi-Maxwellian neutron spectrum with an intensity of 3- 5×10^10 n/s, more than one order of magnitude larger than presently available near-threshold 7Li(p,n) neutron sources. The setup was used to determine the 30-keV Maxwellian averaged cross section (MACS) of 94Zr and 96Zr based on activation measurements. In addition, we show that the setup yields intense high- energy (17.6 and 14.6 MeV) prompt capture γ rays (~10^9 γ/s) from 7Li(p,γ)8Be, evidenced by the 90Zr(γ,n)89Zr photonuclear reaction. The details of these measurements will be described in this talk. Additional details of the upcoming Israeli Joint Nuclear Physics' Seminars can be found on the following link. ‏האירוע הזה כולל שיחת וידאו ב-Google Hangouts. הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/the-israeli?hceid...