A5101519231- Gyrotron and Vacuum Electronics Research
- Microwave Engineering and Waveguides
- Terahertz technology and applications
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- Photonic and Optical Devices
- Orbital Angular Momentum in Optics
- Laser-induced spectroscopy and plasma
- Pulsed Power Technology Applications
- Radiation Detection and Scintillator Technologies
- Advancements in Battery Materials
- Photonic Crystals and Applications
- Metamaterials and Metasurfaces Applications
- Solid State Laser Technologies
- Supercapacitor Materials and Fabrication
- Laser Design and Applications
- Nuclear Materials and Properties
- Superconducting and THz Device Technology
- Laser-Matter Interactions and Applications
- Electromagnetic Simulation and Numerical Methods
- Advanced Battery Technologies Research
- Obsessive-Compulsive Spectrum Disorders
- Plasmonic and Surface Plasmon Research
Tianjin Anding Hospital
2022-2025
Qingdao University of Science and Technology
2022-2024
Nexen (Canada)
2024
Tianjin Medical University
2022
Hunan Normal University
2012-2021
Changsha Normal University
2021
State Grid Corporation of China (China)
2020-2021
Institute for Laser Technology
2009-2019
Huawei Technologies (China)
2019
Osaka University
2017-2018
This letter reports an approach to realize coherent radiation at the fundamental frequency of wave that is resonant with electron beam in a Smith-Purcell (SP) free-electron laser (FEL). We found two-dimensional grating structure equipped dielectric substrate could provide electromagnetic mode which shows property surface vacuum region where beam-wave interaction occurs, and operates as radiative region. Thus, holding medium energy radiate frequency, different from typical radiates only...
We report an approach to efficiently generate terahertz radiation from a combined periodic structure. The proposed configuration is composed of two metallic slit arrays deliberately designed with different length, width and depth. found that the combination could provide special electromagnetic modes, which exhibit nonradiative property above surface one array radiative inside other one. An electron beam holding proper energy resonate those modes strong directional radiations in regime,...
The pre-lithiation strategy is applied to improve the lithium ion storage performance of ZnO anode. successful doping confirmed. relationship between amount and electrochemical deeply investigated.
We aimed to verify the impact of functional remediation (FR) on serum brain-derived neurotrophic factor (BDNF) and tyrosine kinase receptor B (TrkB) levels, explore biomechanism FR intervention in patients with euthymic bipolar disorder (BD). This is a randomized controlled, 12-week study participants into group (n=39) treatment as usual (TAU, n=42) at 1∶1 ratio. 17-Hamilton Depression Rating Scale-17 (HDRS-17), Young Mania Scale (YMRS), Measurement Treatment Research Improve Cognition...
Abstract The thermal load on high-temperature superconducting (HTS) tapes during quenching poses a threat to the stable operation of magnets. To protect coils and cables, this paper investigates quench characteristics HTS as basis. First, coupled with reduced-dimensional model current redistribution model, finite element method (FEM) based 3D T-A formulation for single tape was built. Taking into account terminal resistances circuit inductances, parallel can be further analyzed by...
This paper presents a study of coherent and superradiant Smith-Purcell (SP) radiation with the help two-dimensional particle-in-cell (PIC) simulation. The simulation model supposes rectangular grating period length $173\text{ }\ensuremath{\mu}\mathrm{m}$ to be driven by single electron bunch, train periodic bunches continuous beam, respectively. We chose 40 keV as initial energy electrons therefore SP frequency falls in THz regime. From our bunch we distinguish true separated time from...
This article reports a slow-wave structure (SWS) working at 1 THz which can be fabricated through nano-computer numerical control (nano-CNC) technology for the first time. First, deformed quasi sine waveguide (D-QSWG) SWS has been designed and simulated in this article. To reduce metal loss of input output waveguide, coupler transit to over mode rectangular designed. The simulation result shows that waveguides with have lower than WR1 waveguide. fabricate D-QSWG SWS, tungsten steel endmills...
A simulation of coherent and super-radiant Smith-Purcell radiation is performed in the gigahertz regime using a three-dimensional particle-in-cell code. The model supposes rectangular grating to be driven by single electron bunch train periodic bunches, respectively. true distinguished from evanescent wave, which has an angle independent frequency lower than minimum allowed frequency. We also find that radiations excited bunches are emitted at higher harmonics bunching corresponding angles.
It has been demonstrated that the interaction between argon clusters and intense femtosecond double laser pulses with appropriate intervals in time space provides important properties for terahertz electromagnetic wave generation, namely, high forward directivity, power enhancement, linear polarization a variable direction. Irradiating (1 3 mJ, 40 fs, 810 nm) 133-ps 40-μm results emission direction is 10 times greater than single pulse. The of waves can be varied by changing relative focal...
A sidewall grating for the Smith-Purcell device is proposed to enhance coupling of optical mode with electron beam and, consequently, relax stringent requirements beam. With help three-dimensional particle-in-cell simulations, it has been shown that, comparing general grating, usage a improves growth rate and dramatically shortens time reach saturation. It also found that holds potential reduce start current operation backward wave oscillator.
This paper studies dispersion characteristics of the transverse magnetic (TM) mode for two-dimensional unmagnetized dielectric plasma photonic crystal by a modified plane wave method. First, cutoff behaviour is made clear using Maxwell–Garnett effective medium theory, and influences filling factor constant on frequency are analysed. Moreover, occurence large gaps in demonstrated comparing skin depth with lattice constant, influence first three also studied. Finally, particle-in-cell...
Background Brain-derived neurotrophic factor (BDNF) is a candidate for susceptibility locus of Panic disorder (PD). However, the findings about role BDNF Val66Met variant in PD were not consistent. Till now, relationship between polymorphism and anxiety-related traits patients has been rarely explored. This study aimed to explore among polymorphism, plasma level trait Chinese patients. Method multi-center included 116 99 health controls. We detected single-nucleotide (SNP) rs6265 (Val66Met)...
We aimed to explore the predictive role of serum BDNF and anxiety-related variables in changes somatic symptoms post-escitalopram treatment panic disorder (PD) patients.Ninety PD patients 99 healthy controls (HCs) were enrolled. received an 8-week escitalopram treatment. All administered Panic Disorder Severity Scale-Chinese Version (PDSS-CV) State-Trait Anxiety Inventory (STAI) assess symptoms, respectively. Patient Health Questionnaire 15-item scale (PHQ-15) was performed measure blood...
In 1957, Agodi predicted that the neutron angular distribution in (γ, n) reactions with a 100% linearly polarized γ-ray beam for dipole excitation should be anisotropic and universally described by simple function of a+b⋅cos(2ϕ) at polar angle θ=90°, where ϕ is azimuthal angle. However, this prediction has not been experimentally confirmed over half century. We have verified reaction 197Au, 127I, natural Cu targets using laser Compton scattering γ-rays. The result suggests (γ→, novel tool...
In this letter, the modified flat-roofed sine waveguide slow-wave structure (FRSWG-SWS) is proposed for wideband high-power sub-terahertz traveling-wave tube (sub-THz TWT), which possesses advantages of wide operating bandwidth, low loss, minimal reflection, and ease fabrication. The simulation results demonstrate that transmission parameter more than −5.0 dB in frequency range between 210 250 GHz. beam–wave interaction indicate FRSWG can provide over 50 W output power 30 gain from 205 to...
Research on laser Compton scattering gamma-ray-based nuclear transmutation has been carried out to identify a method of reducing the hazards long-lifetime radioactivity waste. To study photonuclear reaction experimentally, gamma-ray facility was built storage ring at NewSUBARU and ~17MeV photons were produced. An investigation rate radioactive iodine waste out. Based characteristics gamma rays, cylindrical target adopted for irradiation experiment. The irradiated measured deduced....
The rational design of the heterogeneous interfaces enables precise adjustment electronic structure and optimization kinetics for electron/ion migration in energy storage materials. In this work, built-in electric field is introduced to iron-based anode material (Fe2O3@TiO2) through well-designed heterostructure. This model serves as an ideal platform comprehending atomic-level electron transfer advanced lithium-ion batteries (LIBs). As a result, core-shell Fe2O3@TiO2 delivers remarkable...
KEYWORDS: laser-electron systemgamma radiationenergy spectraphotoneutron reactionnuclear transmutationnuclear giant resonancecoupling efficiencylong lived fission productscesium 135iodine 129