Novel experimental techniques for neutron induced charge particle reaction studies in nuclear astrophysics

Chandrabhan Yadav,Moshe Friedman,W Liu,Y Wang,B Guo,S Zeng,X Tang

doi:10.1051/epjconf/202226011048

Chandrabhan Yadav, Moshe Friedman + Show 5 more

Open Access

https://doi.org/10.1051/epjconf/202226011048

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Abstract

Neutron induced reaction studies on various unstable and short-lived nuclei play a very important role in understanding the various nucleosynthesis processes occuring in astrophysics scenario. We discuss here our approach to study neutron induced charge particle cross-section for various unstable and short-lived nuclei at effective temperatures of ~1.5-3.5 GK using the 7Li(p, n) reaction as a neutron source with ﬁve orders of magnitude higher neutron intensities with respect to currently available neutron time-of-ﬂight facilities, using SARAF accelarator and Liquid Lithium Target (LiLiT) facility.

Highlights

Measurements of neutron-induced reaction rates on various unstable and short-lived nuclei are imperative for a complete understanding of the nucleosynthesis occurring in various astrophysical sites and events
Nucleosynthesis in explosive scenarios does not occur in a specific temperature, it is important to determine Maxwellian Averaged Cross-Section (MACS) values continuously through-out this temperature region
Our proposed method is based on a series of cross section measurements at different proton energies with proper weighting to obtain the MACS values at any given temperature in this range

Summary

Introduction

Measurements of neutron-induced reaction rates on various unstable and short-lived nuclei are imperative for a complete understanding of the nucleosynthesis occurring in various astrophysical sites and events. An alternative approach suggested in Ref [2], extensively used for the last three decades They suggested to use the 7Li(p, n) reaction as a neutron source with a specific proton energy at 1.912 MeV, close to reaction threshold at 1.88 MeV and a thick Li target. The method to produce the neutron field, MACS values at different temperature and required computation tool is described in detail in a recent publication [9] We will use this method to study (n, p) and (n, α) cross-sections at explosive stellar temperatures, for various nuclei for which experimental data is poor or even non-existent

Experimental plans and details

Summary and outlook