RIKEN Nishina Center for Accelerator-Based Science SAMURAI Team

Team Leader: Hideaki Otsu (D.Sc.)

Japanese Page

Research Summary

In collaboration with research groups in and outside RIKEN, the team designs, develops and constructs the SAMURAI spectrometer and relevant equipment that are and will be used for reaction experiments using RI beams at RI Beam Factory. The SAMURAI spectrometer consists of a large superconducting dipole magnet and a variety of detectors to measure charged particles and neutrons. After the commissioning experiment in March 2012, the team prepared and conducted, in collaboration with researchers in individual experimental groups, the first series of experiments with SAMURAI in May 2012. The team also provides basis for research activities by, for example, organizing collaboration workshops by researchers who are interested in studies or plan to perform experiments with the SAMURAI spectrometer.

Main Research Fields

Mathematical & Physical Sciences

Keywords

Unstable nuclei
Neutron drip-line
Weakly bound structure
Cluster structure on nuclei

Selected Publications

1. C. Y. Tsang, M. Kurata-Nishimura et al.
"Constraining nucleon effective masses with flow and stopping observables from the SπRIT experiment",
Phys. Lett. B(853), 2024, 138661
2. J. Kahlbow et al.
"Magicity versus Superfluidity around ²⁸O viewed from the Study of ³⁰F"
Phys. Rev. Lett. 133 (2024)082501.
3. B. Monteagudo et al.
"Mass, Spectroscopy and Two-Neutron Decay of ¹⁶Be"
Phys. Rev. Lett. 132 (2024) 082501.
4. P.J. Li et al.,
"Validation of the ¹⁰Be Ground-State Molecular Structure Using ¹⁰Be (p,p alpha) ⁶He Triple Differential Reaction Cross-Section Measurements"
Phys. Rev. Lett. 131 (2023) 212501.
5. Y. Kondo et al.,
"First observation of ²⁸O"
Nature 620 (2023) 965 2023.
6. H. Wang et al.,
"Intruder configurations in ²⁹Ne at the transition into the island of inversion: Detailed structure study of ²⁸Ne"
Phys. Lett. B843,138038 (2023).
7. M. Duer et al.,
"Observation of a correlated free four-neutron system"
Nature 606(678-682)2022
8. J. Estee et al.
"Probing the Symmetry Energy with the Spectral Pion Ratio"
Phys. Rev. Lett. 126 (2021) 162701.
9. Y. Kubota et al.
"Surface Localization of the Dineutron in ¹¹Li"
Phys. Rev. Lett. 125 (2020) 252501.
10. J. Barney et al.,
"The SπRIT time projection chamber"
Rev. Sci. Instrum. 92 (2021) 063302.

Lab Members

Principal investigator

Hideaki Otsu: Team Leader

Careers

Position	Deadline
Seeking a Postdoctoral Researcher (W24350)	Open until filled

Contact Information

2-1 Hirosawa,
Wako, Saitama
351-0198, Japan