A5002346622- Nuclear physics research studies
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Gamma-ray bursts and supernovae
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Astronomy and Astrophysical Research
- Nuclear reactor physics and engineering
- Advanced X-ray Imaging Techniques
- Copper-based nanomaterials and applications
- Adaptive optics and wavefront sensing
- Advanced Photocatalysis Techniques
- Medical Imaging Techniques and Applications
- Advanced Antenna and Metasurface Technologies
- TiO2 Photocatalysis and Solar Cells
- Astronomical and nuclear sciences
- Electromagnetic Compatibility and Measurements
- Atomic and Molecular Physics
- High-pressure geophysics and materials
- Atomic and Subatomic Physics Research
- Quantum, superfluid, helium dynamics
- Space Technology and Applications
- X-ray Spectroscopy and Fluorescence Analysis
Tsinghua University
2021-2024
Beihang University
2021
Shanghai Jiao Tong University
2019
Epsilon Lambda Electronics (United States)
2003
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 neutron-neutron ($nn$) correlation function has been measured in 25 MeV/u $^{124}$Sn+$^{124}$Sn reactions. Using the Lednick\'y-Lyuboshitz approach, $nn$ scattering length and effective range ($f_{0}^{nn}$, $d_{0}^{nn}$), as well reduced space-time size $R^{(0)}$ of neutron emission source are simultaneously extracted ($18.9^{+1.3}_{-1.2}$ fm, $1.9^{+1.3}_{-1.0}$ fm) $4.12 \pm 0.12$ respectively. is consistent with results obtained low-energy $^{2}{\rm H}(\pi^{-},\gamma)2n$, indicating...
Abstract By combining femtoscopic interferometry with an optical deblurring algorithm, we present a novel method to image the source in heavy-ion collisions (HICs) while simultaneously determining interaction strength between particle pairs. The spatial distribution of emission has been reconstructed for protons ( p ) and antiprotons from respective pp correlation functions Au+Au at √ S NN = 200 GeV. Within experimental uncertainties, share same freeze-out showing higher density center...
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...
This paper reports on the development of an FMCW/monopulse radar front-end design capable acquiring range and angular information all obstacles in its field-of-view simultaneously without using a scanning or switching antenna. Design tradeoffs are discussed test results presented.
The high momentum tail (HMT) in the distribution of nucleons above Fermi surface has been regarded as an evidence short-range correlations (SRCs) atomic nuclei. It showcased recently that np Bremsstrahlung radiation heavy ion reactions can be used to extract HMT information. Richardson-Lucy (RL) algorithm is introduced reconstruction original {\gamma}-ray energy spectrum from experimental measurements. By solving inverse problem detector response {\gamma}-rays, {\gamma} 25 MeV/u 86Kr + 124Sn...
The emission of neutrons from heavy ion reactions is an important observable for studying the asymmetric nuclear equation state and reaction dynamics. A 20-unit neutron array has been developed mounted on compact spectrometer experiments (CSHINE) to measure spectra, neutron-neutron neutron-proton correlation functions. Each unit consists a $\rm 15\times 15~cm^3$ plastic scintillator coupled $ \phi=52 ~\rm mm$ photomultiplier. Geant4 simulation with optical process performed investigate time...
By combining the femtoscopic interferometry and optical deblurring algorithm, we implement a novel method to image source formed in HICs, while interaction strength between particle pair can be simultaneously determined. The spatial distribution of emission has been reconstructed for protons ($p$) antiprotons ($\bar{p}$) from respective $pp$ $\bar{p}\bar{p}$ correlation functions Au+Au collisions at $\sqrt{S_{\rm NN}}=200$ GeV. Within experimental uncertainties, share same freeze-out showing...
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...
TiO 2 is a promising photocatalyst in the reaction of water splitting for hydrogen. Here, we used NaBH 4 reduction to introduce [Formula: see text]/V O defect states into Si-doped nanotubes and investigated photoelectrochemical properties. It was found that photocatalytic activity improved through because existence . The ([Formula: ) could play role capture trap accelerate separation photogenerated electrons holes. photocurrent density reduced 3[Formula: text]h 1.5[Formula: text]mA/cm...
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 energetic bremsstrahlung photons up to 100 MeV produced in heavy ion collisions can be used as a sensitive probe the short range correlation atomic nuclei. energy of $\gamma$-rays measured by collecting \v{C}erenkov light medium induced fast electrons generated Compton scattering or electromagnetic shower incident $\gamma$ ray. Two types detectors, based on pure water and lead glass material respectively, are designed for above purpose. response optical photon propagation detectors have...
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}+...