A3F-CNS Summer School 2022

Measurement of 130Sn(d,p) and 130Te(d,p) reactions with TiNA for Neutron Capture Rate in r-process Nucleosynthesis

20 Aug 2022, 13:30

15m

Shinrin-Koen Heitage Resort

Experimental Nuclear Physics Young Scientist Session 1

Speaker

Taiga Haginouchi (Tohoku University)

Description

Neutron capture rate on neutron-rich nuclei is one of the most uncertain nuclear physics parameters to understand the r-process nucleosynthesis in the universe. According to the network simulation of the nucleosynthesis, the neutron capture on ${}^{130}\mathrm{S}\mathrm{n}$ significantly affects the final abundances of the r-process. To reduce the uncertainty, we performed the experiment to study the neutron capture rate of ${}^{130}\mathrm{S}\mathrm{n}$ using the surrogate ratio method at the BigRIPS-OEDO beamline in RIKEN’s RIBF. In this experiment, we measured ${}^{130}\mathrm{S}\mathrm{n}(d,p)$ and ${}^{130}\mathrm{T}\mathrm{e}(d,p)$ reactions separately in inverse kinematics to determine the ratio of the gamma emission probabilities from the respective unbound states. The protons recoiled from the CD${}_2$ solid target were detected by a recoil particle detector array, TiNA.
The present status of the analysis will be discussed.