A5045934005- Nuclear physics research studies
- High-Energy Particle Collisions Research
- Nuclear Physics and Applications
- Gamma-ray bursts and supernovae
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- Astronomy and Astrophysical Research
- Particle physics theoretical and experimental studies
- Underwater Vehicles and Communication Systems
- High-pressure geophysics and materials
- Energy Efficient Wireless Sensor Networks
- Modular Robots and Swarm Intelligence
- Particle accelerators and beam dynamics
- Elasticity and Material Modeling
- Adaptive optics and wavefront sensing
- Nonlocal and gradient elasticity in micro/nano structures
- Quantum, superfluid, helium dynamics
- Geotechnical Engineering and Underground Structures
- Vibration and Dynamic Analysis
- Astronomical and nuclear sciences
- Railway Engineering and Dynamics
- Space Technology and Applications
Tsinghua University
2010-2024
Collaborative Innovation Center of Quantum Matter
2019-2020
Western University
1994
The high momentum tail (HMT) of nucleons, as a signature the short-range correlations in nuclei, has been investigated by high-energy bremsstrahlung γ rays produced 86Kr+124Sn at 25 MeV/nucleon. energetic photons are measured CsI(Tl) hodoscope mounted on spectrometer CSHINE. energy spectrum ≥35 MeV can be reproduced Isospin- and Momentum-Dependent Boltzmann-Uehling-Uhlenbeck model calculations incorporating photon production channel from np process which HMTs nucleons is considered. A...
The drift of the isospin degree freedom (IDOF) is experimentally visualized through wide-range angular distribution and beam energy dependence composition light charged particles (LCP) produced in heavy ion collisions. It evidenced that net transport presented whole process from early dynamic emission to statistical evaporation lasting very late stage. Due long-time accumulation effect, relative neutron excess summing over LCPs utilized as a sensitive probe symmetry energy. With S fixed at...
The intensity interferometry is applied as a chronometer of the particle emission hydrogen isotopes from intermediate velocity source formed in 40Ar+197Au reactions at 30 MeV/u. dynamic order τp>τd>τt evidenced via correlation functions nonidentical pairs. Assuming similar size, same inferred identical pairs, where τp≈100fm/c extracted by fit Koonin-Pratt equation to p-p function. Transport model simulations demonstrate that light charged particles depends on stiffness nuclear symmetry energy.
Thermodynamic and chemical two-body correlations of the isotope-resolved clusters are measured in 86Kr+208Pbreactions at 25 MeV/u. The yield kinetic variables A=3 isobars analyzed coincidence with intermediate mass fragments 6≤A≤11. While velocity spectra both t 3He exhibit scaling behavior over type fragments, ratios t/3He correlate reversely to neutron-to-proton ratio N/Z latter, showing ping-pong modality emitted particles. commonality that residues keeps initial system value is extended...
The emission of light particles in coincidence with fast fission near peripheral reactions 40Ar+197Au at 30 MeV/u beam energy has been studied by using the Improved Quantum Molecular Dynamics Model (ImQMD). It is demonstrated that symmetrical heavy target-like fragment (TLF), coalescence-invariant neutrons (CIN) enhanced particularly large angles comparison to events without fission. Due CIN and accumulation isospin effect long-time process, yield ratio protons (CIP) exhibits significant...
We have developed a position-sensitive Parallel Plate Avalanche Counter (PPAC) to detect the fission fragments and reconstruct reaction plane in experiment of studying nuclear equation state (nEOS) by means heavy ion collision (HIC). This put forward high requirements for performances PPAC, such as time resolution, efficiency position resolution. According these we designed PPAC with an active area 240 mm × 280 working at low gas pressure. The results show that resolution could be less than...
The high momentum tail (HMT) of nucleons, as a signature the short-range correlations in nuclei, has been investigated by high-energy bremsstrahlung $\gamma$ rays produced $^{86}$Kr + $^{124}$Sn at 25 MeV/u. energetic photons are measured CsI(Tl) hodoscope mounted on spectrometer CSHINE. energy spectrum above 30 MeV can be reproduced IBUU model calculations incorporating photon production channel from $np$ process which HMTs nucleons is considered. A non-zero HMT ratio about $15\%$ favored...
Three-dimensional transient response of both massless and massive multiple, rigid foundations, bonded to an elastic, homogeneous half-space, is investigated study the effect dynamic interaction through-soil. The numerical procedure formulated in terms boundary element approach by means fundamental solutions developed authors (1994). This works efficiently for problem addressed here since separated foundations are analyzed without discretizing surface half-space outside contact areas between...
The experiment of Ar+Au reactions at 30 MeV/u have been performed using the Compact Spectrometer for Heavy IoN Experiments (CSHINE) in phase I. light-charged particles are measured by silicon stripe telescopes coincidence with fission fragments recorded parallel plate avalanche counters. distribution properties azimuth difference $\Delta \phi$ and time-of-flight TOF$ presented varying folding angles which represents linear momentum transfer from projectile to reaction system. relative...
The neutron rich neck zone created in heavy ion reaction is experimentally probed by the production of $A=3$ isobars. energy spectra and angular distributions triton $^3$He are measured with CSHINE detector $^{86}$Kr +$^{208}$Pb reactions at 25 MeV/u. While spectrum $^{3}$He harder than that triton, known as "$^{3}$He-puzzle", yield ratio $R({\rm t/^3He})$ presents a robust rising trend polar angle laboratory. Using fission fragments to reconstruct plane, enhancement out-plane confirmed...
We report the reconstruction method of fast fission events in 25 MeV/u $^{86}$Kr +$^{208}$Pb reactions at Compact Spectrometer for Heavy IoN Experiment (CSHINE). The fragments are measured by three large-area parallel plate avalanche counters, which can deliver position and arrival timing information fragments. start is given radio frequency cyclotron. Using velocities two fragments, reconstructed. broadening both velocity distribution azimuthal difference decrease with folding angle,...
Two-body correlations of the isotope-resolved light and heavy clusters are measured in $^{86}$Kr+$^{\rm 208}$Pb reactions at 25 MeV/u. The yield kinetic variables $A=3$ isobars, triton $^3$He, analyzed coincidence with $7\le A \le 14$ emitted earlier chance. While velocity spectra both $^3$He exhibit scaling behavior over type clusters, ratios ${\rm t/^3He}$ correlate reversely to neutron-to-proton ratio $N/Z$ latter, showing ping-pong modality clusters. commonality that residues keeps...
A trigger system of general function is designed using the commercial module CAEN V2495 for heavy ion nuclear reaction experiment at Fermi energies. The has been applied and verified on CSHINE (Compact Spectrometer Heavy IoN Experiment). Based field programmable logic gate array (FPGA) technology command register access remote computer control operation, functions can be flexibly configured according to experimental physical goals. Using CSHINE, we carried out beam 25 MeV/u $ ^{86}{\rm Kr}+...