[RIBF ULIC mini-WS] Structure of neutron-rich matter revealed by beta decay

Session

Session 2

Jul 29, 2024, 3:30 PM

Nishina Hall

Conveners

Session 2

• Shunji Nishimura (RIKEN Nishina Center)

4. Recent progress and attempts to describe beta decay based on nuclear DFT

Nobuo HINOHARA (Center for Computational Sciences, University of Tsukuba)

7/29/24, 3:30 PM

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10. [online] Why beta delayed neutrons matter…

Alejandro Algora (IFIC (CSIC-Univ. Valencia))

7/29/24, 4:00 PM

Discovered by Roberts et al. beta delayed neutrons are very relevant in reactor control, nuclear astrophysics and nuclear structure. Beta delayed neutron emission is a process that become more a more dominant as we move far away from stability, so its study is crucial for understanding the nuclear structure of very exotic neutron rich nuclei. In this talk, I will present how it is possible to...

8. Test of segmented plastic implantation detector with RI beam at RIBF

Mr Quanbo Zeng (RIKEN)

7/29/24, 4:30 PM

The segmented plastic scintillation detector GARi was tested with RI beam in the focal plain F11 of the RIBF accelerator complex. Implantation-decay correlation was obtained based on the reconstructed ion and beta positions on GARi. Known half-lifes in neutron-rich Ar region were used to validate the implantation-decay correlation. Additionally, several new half-lives in this region were...

18. Half-life and beta-delayed neutron emission measurements of $N \sim 126$ neutron-rich nuclei by BRIKEN at RIBF

Tik Tsun Yeung (The University of Tokyo)

7/29/24, 4:50 PM

The neutron-rich $N \sim 126$ region is important to r-process calculations, but difficult to be accessed by experiments. This region is unique for its strong competition between allowed and first-forbidden transitions, which complicates half-life predictions. Besides, the abundances of the third r-process peak elements and actinides are sensitive to half-lives of $N = 126$ isotones....

1. Beyond mean field approach for beta decay

HIROYUKI SAGAWA

7/29/24, 5:10 PM

We study beta decay by using beyond mean field model so called Subtracted second RPA model including 2-particle-2hole configurations on top of 1p-1h configuration. We study also the effect of tensor correlations in beta decay process.