A5102016118- Nuclear physics research studies
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Advanced Chemical Physics Studies
- Particle accelerators and beam dynamics
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- Radiopharmaceutical Chemistry and Applications
- Particle Detector Development and Performance
- Quantum, superfluid, helium dynamics
- Radiation Therapy and Dosimetry
- Astrophysics and Cosmic Phenomena
- Nuclear Materials and Properties
- Atomic and Molecular Physics
- Magnetic confinement fusion research
- Radio Astronomy Observations and Technology
- Radioactive contamination and transfer
- Electrical and Electromagnetic Research
- Muon and positron interactions and applications
- Gamma-ray bursts and supernovae
- Particle physics theoretical and experimental studies
RIKEN Nishina Center
2019-2024
The University of Tokyo
2024
Yunnan University
2022
State Key Laboratory of Nuclear Physics and Technology
2016-2020
Peking University
2016-2020
RIKEN
2018
γ emission probabilities from unbound states in 78,80Se, populated by a neutron-transfer reaction (d,p) on 77,79Se nuclei inverse kinematics, were measured directly detecting residues. Assuming the spin distribution at respective excitation energy of state, cross-sections 79Se(n,γ)80Se evaluated using probabilities. The surrogate-ratio method with experimental 78,80Se was also employed to deduce 79Se(n,γ) incorporating theoretical evaluations neutron-capture isomeric state 77Se. Our two are...
A cluster-transfer experiment of $^9\rm{Be}(^9\rm{Be},^{14}\rm{C}\rightarrow\alpha+^{10}\rm{Be})\alpha$ at an incident energy 45 MeV was carried out in order to investigate the molecular structure high-lying resonant states $^{14}$C. This reaction is extremely large $Q$-value, making it excellent case select mechanism and final outgoing nuclei. The resonances $^{14}$C are reconstructed for three sets well discriminated $^{10}$Be. results confirm previous decay measurements with clearly...
Measurements of the 2H(16C,16C∗→4He+12Be or 6He+10Be)2H inelastic excitation and cluster-decay reactions have been carried out at a beam energy about 23.5 MeV/u. A specially designed detection system, including one multilayer silicon-strip telescope around zero degrees, has allowed high-efficiency threefold coincident therefore event-by-event determination unstable nucleus beam. The decay paths from 16C resonances to various states final 10Be 12Be are recognized thanks well-resolved Q-value...
Abstract Searching for effective pathways the production of proton-rich and neutron-rich isotopes is one main driving forces behind experimental theoretical nuclear reaction studies as well practical applications in transmutation radioactive waste. To produce nuclei effectively, an optimal combination mechanism energy required. We report a study on incomplete fusion induced by deuteron, which contains proton neutron with weak binding easily broken up. This was achieved measuring directly...
The Optimized Energy Degrading Optics (OEDO) beamline is an upgrade of the High-resolution at RI Beam Factory RIKEN. Its purpose to measure nuclear reactions induced by radioactive ions |$10$|–|$50$| MeV/u. main components OEDO are two superconducting quadrupole triplet magnets and one radio-frequency deflector, which were recently installed. This setup produces slowed-down, well-focused radioactive-isotope beams using a degree freedom in longitudinal phase space beam. paper describes...
A puzzle has long existed for the $\alpha$-cluster content in near-threshold 7.54 MeV state of $^{10}$Be. new measurement was conducted to measure cluster-decay partial width this state, using reaction $\rm{^9Be}(\rm{^9Be}, \rm{^{10}Be}^{*} \rightarrow \alpha + \rm{^6He})\rm{^8Be}$ at 45 beam energy. Special measures were taken reduce strong background. The neutron-decay strength also obtained based on three-fold coincident measurement. branching ratio $(4.04 \pm 1.26)\times 10^{-4}$ is...
Abstract The deuteron is a loosely bound system that can easily break up into its constituent proton and neutron whilst in the presence of Coulomb nuclear fields. Previous experimental studies have shown this breakup process has significant impact on residual-nucleus production from bombardment high-energy range 50–210 MeV/nucleon. However, there remains lack cross-section data at energies below 50 current study determined 93Zr + d reaction cross sections under inverse kinematics...
The spallation and fragmentation reactions of Xe136 induced by proton, deuteron, carbon targets at 168 MeV/nucleon were studied RIKEN Radioactive Isotope Beam Factory via the inverse kinematics technique. A wide range isotopic distributions reaction cross sections has been obtained systematically analyzed using Particle Heavy Ion Transport code System (PHITS) including dynamical intranuclear cascade processes plus evaporation process, semi-empirical parametrization for residue in (SPACS)...
A novel description of charge-exchange reactions at intermediate energies is developed, based on both phenomenological or microscopic eikonal phase-shift functions. The results obtained within this approach are in good agreement with the distorted-wave Born approximation calculations energy region where approximations should be valid. They also compare well experimental data, even relatively low domain. At higher energies, relativistic kinematics have been added and shown to relevant. Owing...
The isotope-production cross sections in p - and d -induced reactions on 93 Zr at approximately 50 MeV/nucleon were measured by using the inverse-kinematics method RIKEN RI Beam Factory. data compared with previous experimental + , 105 209 data. This comparison represents that isotopic distribution of production 51 MeV reaction is appreciably different from those MeV. On other hand, these three sets show shape similar case reaction. Also, theoretical model calculations Particle Heavy Ion...
Abstract Nuclear transmutation is emerging as a promising approach for reprocessing high-level waste, specifically treating long-lived nuclides like $^{93}$Zr from spent fuel. It essential to accumulate reaction data these nuclei advance this prominent treatment and build comprehensive understanding of mechanisms. In study, the residual production cross-sections resulting proton-induced reactions on were measured at 27 MeV/nucleon in inverse kinematics. At RI Beam Factory (RIBF), Optimized...
Abstract The spin-isospin responses of the 11 Li drip-line nucleus has been measured. Preliminary results Li( p, n ) Be experiment in inverse kinematics at RI Beam Factory (RIBF) RIKEN Nishina Center are presented including observation 1 , 2 n, t, d α and 6 He+ decay channels reaction product. Details experimental setup based on PANDORA (Particle Analyzer Neutron Detector Of Real-time Acquisition) low-energy neutron detector SAMURAI large-acceptance magnetic spectrometer described.
The isotopic production cross sections for the reactions of 136 Xe induced by proton, deuteron and carbon at 168 MeV/u were obtained using inverse kinematics technique RIKEN Radioactive Isotope Beam Factory. target dependence was investigated systematically. It found that light-mass products, on are larger than those proton. measured proton compared with previous data higher reaction energies to study energy dependence. experimental results theoretical calculations including both...
Abstract The OEDO (Optimized Energy Degrading Optics for RI beam) beamline has been developed to obtain low-energy (10 – 50 MeV/u) beams by slowing down the secondary at RIBF, RIKEN. Such are useful probes investigate nuclear structure means of nucleon transfer and Coulomb excitation reactions. is designed produce a well-focused beam small energy spread with help angle-tuneable wedge degrader radio-frequency deflector. commissioning first physics experiments using were carried out in 2017....