A5100745703- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Photorefractive and Nonlinear Optics
- Nuclear reactor physics and engineering
- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Advanced X-ray and CT Imaging
- Metal and Thin Film Mechanics
- Glass properties and applications
- Advanced Chemical Physics Studies
- Material Dynamics and Properties
- Radioactive contamination and transfer
- Advanced Sensor Technologies Research
- High-pressure geophysics and materials
- Vacuum and Plasma Arcs
- Advanced Electron Microscopy Techniques and Applications
- Spectroscopy and Laser Applications
- Laser-Plasma Interactions and Diagnostics
- Advanced Physical and Chemical Molecular Interactions
- Photonic and Optical Devices
- Particle Accelerators and Free-Electron Lasers
- Science, Research, and Medicine
University of Science and Technology of China
2012-2022
Hefei National Center for Physical Sciences at Nanoscale
2021-2022
China Academy of Engineering Physics
2005-2021
Iowa State University
2021
Shandong University
2000-2020
Chinese Academy of Engineering
2007-2020
State Key Laboratory of Crystal Materials
2016-2018
ShanghaiTech University
2018
Karlsruhe Institute of Technology
2016
Beijing Normal University
2012
Mental fatigue is usually caused by long-term cognitive activities, mainly manifested as drowsiness, difficulty in concentrating, decreased alertness, disordered thinking, slow reaction, lethargy, reduced work efficiency, error-prone and so on. has become a widespread sub-health condition, serious impact on the function of brain. However, seldom studies investigate differences mental electrophysiological activity both resting state task at same time. Here, twenty healthy male participants...
A key parameter for the gyrotron operation and efficiency is presence of trapped electrons. Two electron trapping mechanisms can take place in gyrotrons: (i) adiabatic trap (ii) magnetic potential well. Their influence on analyzed. gun design criteria are then proposed to suppress both order minimize risk possible problems. Experimental results three high power gyrotrons presented their performance correlated populations Finally, some very general principles limitation harmful trapping.
It has been proposed that the radiation damage to biological particles and soft condensed matter can be overcome by ultrafast ultraintense X-ray free-electron lasers (FELs) with short pulse durations. The successful demonstration of "diffraction-before-destruction" concept made single-shot diffraction imaging a promising tool achieve high resolutions under native states samples. However, resolution is still limited because low signal-to-noise ratio, especially for specimens such as cells,...
The existence of light sterile neutrinos is a long standing question for particle physics. Several experimental ``anomalies'' could be explained by introducing ~eV mass scaled neutrinos. Many experiments are actively hunting such through neutrino oscillation. For baseline experiments, matter effect needs to treated carefully precise oscillation probability calculation. However, it usually time-consuming or analytical complexity. In this manuscript we adopt the Jacobi-like method diagonalize...
Three-dimensional X-ray imaging of living specimens is challenging due to the limited resolution conventional absorption contrast and potential irradiation damage biological specimens. In this letter, we present microtomography a specimen combining phase-contrast Fourier-based iterative algorithm termed equally sloped tomography. Non-destructive 3D an anesthetized yellow mealworm Tenebrio molitor was demonstrated with relatively low dose using synchrotron generated X-rays. Based on...
The optical waveguide was formed on an LiNbO3 substrate by 2.6 MeV nickel ions implantation to the dose of 9×1014 ions/cm2. Five dark modes were observed prism coupling technique. refractive index profile obtained using reflectivity calculation method. A large decrease found in guiding region and barrier, which is somewhat different from that He+ ions. position barrier deeper than damage peak calculated TRIM'90 (Transport Ions Matter) code. crystal lattice caused Ni+ ion analysed Rutherford...
An electrode configuration with microhollow array dielectric and anode was developed to obtain parallel vacuum arc discharge. Compared the conventional electrodes, more than 10 discharges were ignited for new configuration, which increased discharge area significantly made cathode eroded uniformly. The channel number could be effectively by decreasing distances between holes or increasing current. Experimental results revealed that plasmas ejected from adjacent hollow relatively high voltage...
Effective temperatures of slow-evolving nonequilibrium systems measure characteristic equilibrium systems.
The X-cut, Y-propagation LiNbO3 crystals were implanted by 2.8 MeV P+ ions with doses of ∼1 × 1014 ions/cm2 at room temperature. Planar optical waveguides formed implantation 1 1014, 2 3 and 4 ions/cm2. Contrary to high-dose ion-implanted waveguides, the extraordinary refractive index was found increase in guide region for low dark mode. When light beam coupled waveguide which a dose following annealing 200 °C 30 min air, obvious propagating through entire length waveguide, Rutherford...
The effect of electronic Coulomb interaction on the phase formation fcc Ce lattice is investigated by full ab initio calculations without adjustable $U$ and $J$ parameters using Gutzwiller wavefunction-based correlation matrix renormalization theory (CMRT). Its total energy pressure as a function volume agree reasonably well with existing $\text{DFT}+\text{Gutzwiller}$ experiments, indicating correct capture screening effects within CMRT formalism. A stable found in line experimental...
A sensitivity optimized magnetic proton recoil (MPROS) spectrometer for measuring both steady and pulsed fusion neutron spectra in several complicated environments is developed. The energy-position projection relationship of the measured by utilizing an imaging plate. energy response to MPROS studied through a single event count method on accelerated DT source simulations three-dimensional charged particle transport code. detection efficiency neutrons reaches level 2×10-5 cm2 high parameter...
The growth of perylene and tetracene on Ag (110) has been studied by the ultraviolet photoemission spectroscopy (UPS) low-energy electron diffraction (LEED). LEED results illustrate that an ordered C(6×2) structure can be observed when thickness is about one monolayer (thickness 03n m), C (4×2) for with a monolayer. From measurements UPS, four emission features are located at 35, 48, 64 85eV below Fermi level respectively, f our characteristic peaks, tetracene, 34, 49, 59 9 4 eV...
Heavy metals have seriously contaminated soil and water, done harm to public health. Academician WANG Naiyan proposed that ion-implantation technique should be exploited for environmental bioremediation by mutating breeding plants or microbes. By implanting N+ into Taikonglian No.1, we selected bred two lotus cultivars, Jingguang No.1 No.2. The present study aims at analyzing the feasibility irradiation can used remediation of water from heavy metals. Compared with parent uptaking...
A nonstoichiometric ternary vanadium sulfide, BaxV6S8 (x = 0.41−0.48), was synthesized. This solid-state compound crystallizes in the hexagonal space group P63/m (no. 176) with a 9.2080(3) Å, c 3.3169(2) V 243.55(2) Å3, and Z 1. The structure of this solid is similar to that its parent V3S4, consisting face-sharing, distorted octahedral VS6 units. superconducting transition at approximately 2.5 K observed. computational analysis electronic using extended Hückel method presented.
Pb+ ions have been implanted into LiNbO3 crystals in the energy range of 100-350 keV at doses 5×1015, 1×1016 and 2×1016 ions/cm2. The profile was measured by Rutherford backscattering. mean projected straggling obtained from experiment were compared with TRIM'98 SRIM 2000 code. In present case, code predicts experimental values better than those depth distribution is also found to be independent dose for 350 crystals. After 800°C annealing 60 min ambient air, obvious diffusion occurs 150 a...
KTiOPO4 samples were implanted with 80, 120, and 150 keV H+ ions to fluences of 5 × 1016 ions/cm2 at room temperature. The modes in measured by a model 2010 prism coupler. From one few observed. number observed depends on the energy. present results show that waveguide formation is possible using low energy implantation. Compared MeV light ion waveguides, it cost, simple more useful method. Multi-energy implantation needed reduce tunneling loss.