A5063861296- Nuclear physics research studies
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Quantum Chromodynamics and Particle Interactions
- Advanced NMR Techniques and Applications
- Nuclear reactor physics and engineering
- Advanced Chemical Physics Studies
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Rare-earth and actinide compounds
- X-ray Spectroscopy and Fluorescence Analysis
- Radioactive Decay and Measurement Techniques
- Astro and Planetary Science
- Catalytic C–H Functionalization Methods
- Radiation Detection and Scintillator Technologies
- Oxidative Organic Chemistry Reactions
- Radical Photochemical Reactions
- Sulfur-Based Synthesis Techniques
- Scientific Research and Discoveries
- High-pressure geophysics and materials
- Synthesis and Catalytic Reactions
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
KU Leuven
2016-2025
Sichuan University
2025
Hangzhou City University
2025
The University of Tokyo
2015-2024
University of Tennessee at Knoxville
2019-2024
Zhejiang University
2024
Sichuan Agricultural University
2024
Ministry of Agriculture and Rural Affairs
2024
China Electric Power Research Institute
2021-2024
Jiangxi Normal University
2023-2024
The β-decay half-lives of 110 neutron-rich isotopes the elements from _{37}Rb to _{50}Sn were measured at Radioactive Isotope Beam Factory. 40 new follow robust systematics and highlight persistence shell effects. data have direct implications for r-process calculations reinforce notion that second (A≈130) rare-earth-element (A≈160) abundance peaks may result freeze-out an (n,γ)⇄(γ,n) equilibrium. In such equilibrium, are important factors determining rare-earth elements, allow a more...
The half-lives of 20 neutron-rich nuclei with Z=27-30 have been measured at the RIBF, including five new (76)Co(21.7(-4.9)(+6.5) ms), (77)Co(13.0(-4.3)(+7.2) (79)Ni(43.0(-7.5)(+8.6) (80)Ni(23.9(-17.2)(+26.0) and (81)Cu(73.2 ± 6.8 ms). In addition, (73-75)Co, (74-78)Ni, (78-80)Cu, (80-82)Zn were determined higher precision than previous works. Based on these results, a systematic study β-decay has carried out, which suggests sizable magicity for both proton number Z = 28 neutron N=50 in (78)Ni.
The change in mean-square nuclear charge radii δ⟨r2⟩ along the even-A tin isotopic chain 108−134Sn has been investigated by means of collinear laser spectroscopy at ISOLDE/CERN using atomic transitions 5p2 1S0→5p6 s1P1 and 3P0→5p6s 3P1. With determination radius 134Sn corrected values for some neutron-rich isotopes, evolution across N=82 shell closure is established. A clear kink doubly magic 132Sn revealed, similar to what observed other chains with larger proton numbers, N=126 208Pb. While...
Collinear laser spectroscopy is performed on the nickel isotopes ^{58-68,70}Ni, using a time-resolved photon counting system. From measured isotope shifts, nuclear charge radii R_{c} are extracted and compared to theoretical results. Three ab initio approaches all employ, among others, chiral interaction NNLO_{sat}, which allows an assessment of their accuracy. We find agreement with experiment in differential δ⟨r_{c}^{2}⟩ for employed methods interactions, while absolute consistent data...
Spinal cord injury (SCI) is a traumatic condition that results in impaired motor and sensory function. Ferroptosis one of the main causes neural cell death loss neurological function spinal cord, ferroptosis inhibitors are effective reducing inflammation repairing SCI. Although human umbilical mesenchymal stem cells (Huc-MSCs) can ameliorate inflammatory microenvironments promote regeneration SCI, their efficacy greatly limited by local microenvironment after Therefore, this study, we...
We report on the measurement of first 2(+) and 4(+) states (66)Cr (70,72)Fe via in-beam γ-ray spectroscopy. The nuclei interest were produced by (p,2p) reactions at incident energies 260 MeV/nucleon. experiment was performed Radioactive Isotope Beam Factory, RIKEN, using DALI 2γ-ray detector array novel MINOS device, a thick liquid hydrogen target combined with vertex tracker. A low-energy plateau 2(1)(+) 4(1)(+) as function neutron number observed for N≥38 N≥40 even-even Cr Fe isotopes,...
The β-decay half-lives of 94 neutron-rich nuclei ^{144-151}Cs, ^{146-154}Ba, ^{148-156}La, ^{150-158}Ce, ^{153-160}Pr, ^{156-162}Nd, ^{159-163}Pm, ^{160-166}Sm, ^{161-168}Eu, ^{165-170}Gd, ^{166-172}Tb, ^{169-173}Dy, ^{172-175}Ho, and two isomeric states ^{174m}Er, ^{172m}Dy were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops are observed neutron-number N=97 for _{58}Ce, _{59}Pr, _{60}Nd, _{62}Sm, N=105...
Delayed γ-ray cascades, originating from the decay of (6⁺) isomeric states, in very neutron-rich, semimagic isotopes (136,138)Sn have been observed following projectile fission a ²³⁸U beam at RIBF, RIKEN. The wave functions these states are proposed to be predominantly fully aligned pair f(7/2) neutrons. Shell-model calculations, performed using realistic effective interaction, reproduce well energies excited nuclei and measured transition rates, with exception B(E2;6⁺→4⁺) rate ¹³⁶Sn, which...
The level structures of the very neutron-rich nuclei 128Pd and 126Pd have been investigated for first time. In r-process waiting-point nucleus 128Pd, a new isomer with half-life 5.8(8) μs is proposed to spin parity 8(+) associated maximally aligned configuration arising from g(9/2) proton subshell seniority υ=2. For 126Pd, two isomers identified half-lives 0.33(4) 0.44(3) μs. yrast 2(+) energy much higher in than while sequence below similar that N=82 isotone 130Cd. electric quadrupole...
In-beam γ-ray spectroscopy of ^{79}Cu is performed at the Radioactive Isotope Beam Factory RIKEN. The nucleus interest produced through proton knockout from a ^{80}Zn beam 270 MeV/nucleon. level scheme up to 4.6 MeV established for first time and results are compared Monte Carlo shell-model calculations. We do not observe significant feeding excited states below 2.2 MeV, which indicates that Z=28 gap N=50 remains large. show can be described in terms valence outside ^{78}Ni core, implying...
Detecting various types of cells in and around the tumor matrix holds a special significance characterizing micro-environment for cancer prognostication research. Automating tasks detecting, segmenting, classifying nuclei can free up pathologists' time higher value reduce errors due to fatigue subjectivity. To encourage computer vision research community develop test algorithms these tasks, we prepared large diverse dataset nucleus boundary annotations class labels. The has over 46,000 from...
The first fast-timing measurements from nuclides produced via the in-flight fission mechanism are reported. lifetimes of 2+ states in 104,106Zr nuclei have been measured β-delayed γ-ray timing stopped radioactive isotope beams. An improved precision for lifetime 21+ state 104Zr was obtained, τ(21+)=2.90−20+25 ns, as well a measurement 106Zr, τ(21+)=2.60−15+20 with corresponding reduced transition probabilities B(E2;21+→0g.s.+)=0.39(2)e2b2 and 0.31(1)e2b2, respectively. Comparisons extracted...
Excited states in the $N=102$ isotones $^{166}\mathrm{Gd}$ and $^{164}\mathrm{Sm}$ have been observed following isomeric decay for first time at RIBF, RIKEN. The half-lives of measured to be 950(60) 600(140) ns $^{164}\mathrm{Sm}$, respectively. Based on patterns potential energy surface calculations, including ${\ensuremath{\beta}}_{6}$ deformation, a spin parity ${6}^{\ensuremath{-}}$ has assigned both nuclei. Collective observables are discussed light systematics region, giving insight...
A low-lying state in 131In82, the one-proton hole nucleus with respect to double magic 132Sn, was observed by its γ decay Iπ=1/2- β-emitting isomer. We identify new at an excitation energy of Ex=1353 keV, which populated both β 131Cd83 and after β-delayed neutron emission from 132Cd84, as previously unknown πp3/2 single-hole 132Sn core. Exploiting this crucial experimental information, shell-model calculations were performed study structure experimentally inaccessible N=82 isotones below...
Excited-state spectroscopy from the first Facility for Rare Isotope Beams (FRIB) experiment is reported. A 24(2)-$\mu$s isomer was observed with FRIB Decay Station initiator (FDSi) through a cascade of 224- and 401-keV $\gamma$ rays in coincidence $^{32}\textrm{Na}$ nuclei. This only known microsecond ($1{\text{ }\mu\text{s}}\leq T_{1/2} < 1\text{ ms}$) region. nucleus at heart $N=20$ island shape inversion crossroads spherical shell-model, deformed ab initio theories. It can be represented...
The first measurement of the low-lying states neutron-rich ^{110}Zr and ^{112}Mo was performed via in-beam γ-ray spectroscopy after one proton removal on hydrogen at ∼200 MeV/nucleon. 2_{1}^{+} excitation energies were found 185(11) keV in ^{110}Zr, 235(7) ^{112}Mo, while R_{42}=E(4_{1}^{+})/E(2_{1}^{+}) ratios are 3.1(2), close to rigid rotor value, 2.7(1), respectively. These results compared modern energy density functional based configuration mixing models using Gogny Skyrme effective...
Nuclear spins and precise values of the magnetic dipole electric quadrupole moments ground-states neutron-rich $^{76-78}$Cu isotopes were measured using Collinear Resonance Ionization Spectroscopy (CRIS) experiment at ISOLDE, CERN. The nuclear less exotic $^{73,75}$Cu re-measured with similar precision, yielding that are consistent earlier measurements. odd-odd isotopes, $^{78}_{29}$Cu ($N=49$) in particular, used to investigate excitations assumed doubly-magic $^{78}$Ni core through...
We report on the first γ-ray spectroscopy of low-lying states in neutron-rich 98,100Kr isotopes obtained from 99,101Rb(p,2p) reactions at ∼220 MeV/nucleon. A reduction 2+1 state energies beyond N=60 demonstrates a significant increase deformation, shifted neutron number compared to sharper transition observed strontium and zirconium isotopes. State-of-the-art beyond-mean-field calculations using Gogny D1S interaction predict level good agreement with experimental results. The identification...
A record number of ^{100}Sn nuclei was detected and new isotopic species toward the proton dripline were discovered at RIKEN Nishina Center. Decay spectroscopy performed with high-efficiency detector arrays WAS3ABi EURICA. Both half-life β-decay end point energy measured more precisely than literature values. The value uncertainty resulting strength for pure 0^{+}→1^{+} Gamow-Teller decay improved to B_{GT}=4.4_{-0.7}^{+0.9}. discrimination between different model calculations possible first...
The level structures of 70Co and 70Ni, populated from the β decay 70Fe, have been investigated using β-delayed γ-ray spectroscopy following in-flight fission a 238U beam. experimental results are compared to Monte-Carlo Shell-Model calculations including pf+g9/2+d5/2 orbitals. strong population (1+) state at 274 keV in is variance with expected excitation energy ∼1 MeV near spherical single-particle estimates. This observation indicates dominance prolate-deformed intruder configurations...
The search for new isotopes using the in-flight fission of a 238U beam has been conducted concurrently with decay measurements, during so-called EURICA campaigns, at RIKEN Nishina Center RI Beam Factory. Fission fragments were analyzed and identified in flight BigRIPS separator. We have following 36 neutron-rich isotopes: 104Rb, 113Zr, 116Nb, 118,119Mo, 121,122Tc, 125Ru, 127,128Rh, 129,130,131Pd, 132Ag, 134Cd, 136,137In, 139,140Sn, 141,142Sb, 144,145Te, 146,147I, 149,150Xe, 149,150,151Cs,...