2006 Vol. 18, No. 11

Recommend Articles
高功率微波
Mode analysis of helical wave guide
zhu shi-qiu, wang e-feng, li hong-fu, yan tie-chang, feng jin-jun, li hao, liu ying-hui
2006, 18.
Abstract:
Considering the factors such as the left or right turning directions of wave, the wave being forward or backward, all the possible modes in helical wave guide are given by using the coupling wave equations of helical wave guide. The relationships amo...
Self-modulation of intense relativistic annular electron beam in equipotential resonant cavity
shi yong-fei, zhu da-jun, liu sheng-gang, li zheng-hong
2006, 18.
Abstract:
This paper focuses on an intense relativistic annular electron beam in an equi-potential resonant cavity nonlinear self-modulation oscillation. By using the small signal theory, the start oscillation condition is analyzed and the perturbation frequen...
Influence of UWB microwave irradiation on peripheral blood cells in rats
zhou zhou, zhang lei, hao yu-tong, zhang yan-wen, yu zheng-ping
2006, 18.
Abstract:
To investigate the effects of low and high dose UWB microwave irradiations on peripheral blood cells in rats, wistar rats were exposed to 90 kV/m and 180 kV/m UWB microwave irradiation for 10 min.Venous blood samples were collected at 0, 3, 12, 24 an...
Tri-bend TM01-TE11 mode converter with input-output aligned on the same axis
yuan cheng-wei, zhong hui-huang, qian bao-liang
2006, 18.
Abstract:
A serpentine TM01-TE11 mode converter with input and output ports aligned on the same axis was designed by adopting phase rematch technique. The converter is formed with three constant-curvature bent waveguides and two straight waveguides. Numerical ...
Numerical simulation of the influence of high power electromagnetic pulses on GaAs MESFET
zhang han-qiao, huang ka-ma
2006, 18.
Abstract:
The coupled Maxwell's equations, heat transport equation and carrier equations are solved to simulate the change of temperature and scatering parameters of the GaAs MESFET which is under the irradiation of high power electromagnetic pulses. The trans...
Particle simulation of compact L-band coaxial relativistic backward wave oscillator
niu hong-chang, qian bao-liang
2006, 18.
Abstract:
In this paper, a compact L-band coaxial relativistic backward wave oscillator is investigated using the 2.5 D particle simulation code. Detail physical interaction pictures of the oscillator are presented. Simulation results show that the radius of t...
Study of exploration capability of pseudo-random code UWB short pulse
zhu zhong-ming, wang xu-ben, zhang shuang-shi
2006, 18.
Abstract:
Research method to achieve large bandwidth pulses for detecting neural weak signal is given. Much larger survey depth, better resolution ratio, more powerful image capability and recognition capability can be achieved by using UWB electromagnetic pul...
Radial klystron oscillator driven by intense relativistic electron beam
li shao-fu, yang zhong-hai
2006, 18.
Abstract:
A new radial klystron oscillator driven by intense relativistic electron beam is studied in this paper. A radial intense relativistic electron beam goes through foldaway coaxial cavity , and sel-excites the cavity. The space charge limited current of...
Cavity for 8 mm second-harmonic gyroklystron amplifier
lei chao-jun, yu sheng
2006, 18.
Abstract:
This paper presents how to design cavities for 8 mm second-harmonic gyroklystron amplifier based on the theory of gyroklystron amplifier. A lot of factors, such as the radius, length of cavity, modes competing, beam-wave coupling coefficient and the ...
高功率激光与光学
Preliminary experimental study on singlet oxygen generation from gas-solid reaction system
li qing-wei, chen fang, zhao wei-li, xu ming-xiu, fang ben-jie, zhang yue-long, jin yu-qi, sang feng-ting
2006, 18.
Abstract:
A new gas-solid reaction system for singlet oxygen generation in which sodium peroxide reacted with gaseous chlorine(Na2O2/Cl2) in a fixed-bed reactor was reported. The singlet oxygen emission spectra from Na2O2/Cl2 reaction system were recorded by a...
Structure improvement of cryosorption bed for COIL
xia liang-zhi, wang jin-qu, sang feng-ting, zhao su-qin, li yong-zhao, geng zi-cai, chu rong-qing, gu sheng-xiong
2006, 18.
Abstract:
The pressure recovery system is an important part of Chemical Oxygen-Iodine Laser(COIL). Adopting cryosorption vacuum system as the pressure recovery system of COIL, the pressure recovery capability of cryosorption vacuum system is determined directl...
Method of atmospheric turbulence measurement by lidar
dai yang, lin zhao-xiang, zhang wen-yan, cheng xue-wu, li fa-quan, song shu-yan, gong shun-sheng
2006, 18.
Abstract:
A method for measuring atmospheric turbulence by lidar is reported with its principle, technology and the primary measurement results. Time variations of atmospheric coherence length measured in different altitude range, average atmospheric coherence...
Optimization of etalon parameters in direct detection Doppler wind lidar
xia hai-yun, sun dong-song, shen fa-hua, dong jing-jing
2006, 18.
Abstract:
Based on double-edge technique, the optimization of the operation parameters of Fabry-Perot interferometers in the direct detection Doppler wind lidar is presented. The effects of the laser spectral width, mirror surface defects, parallelism errors, ...
Optics aberrations aroused by moving vorticity pulse
chen yong, jin gang
2006, 18.
Abstract:
Optics aberrations are studied for the case when the aero-noise pulse is propagating through the optical beam. The flow is governed by the Favre-averaged N-S equations. To split the viscosity flux and the convective flux of the N-S equations, the sec...
Two methods to realize phase controlling of ytterbium fiber amplifiers
hou jing, xiao rui, liu ze-jin, jiang zong-fu
2006, 18.
Abstract:
In the field of fiber laser coherent combining, phase controlling of ytterbium fiber amplifiers is the most difficult technology in the Master Oscillator-Power Amplifier scheme. Two methods to realize phase controlling of ytterbium fiber amplifiers a...
Effect reduction of spurious fringes in interferometric measurement system
xu jian-cheng, shi qi-kai, chai li-qun, deng yan, xu qiao
2006, 18.
Abstract:
To accurately profile transparent element with parallel surface, this article presents a new simple and useful method by using a Fourier analysis technique with single three-beam interfere pattern. The test surface’s frequency spectrum from the frequ...
Experimental investigation of improving image resolution with fringe field
peng ren-jun, wu jian, deng rong
2006, 18.
Abstract:
With fringe fields the experiments were carried out to improve the image resolution. The illuminating field is composed of cosine fringes, then the higher frequency component beyond the cutoff of the optical system can be passed. A higher resolution ...
Passive harmonically mode-locked Yb3+-doped fiber laser
lin hong-huan, sui zhan, wang jian-jun, li ming-zhong
2006, 18.
Abstract:
The experimental results of the stable high-order harmonically mode-locked pulses generation, amplification and compression in Yb3+-doped fiber laser system were reported. Using nonlinear polarization rotation(NPR) effect, the artifical saturable abs...
Thermal-mechanical effects on rotating internally pressured cylindrical shell irradiated by laser beam
ding sheng, wang jian-guo, liu feng, shu qing-bang, wang yu-heng
2006, 18.
Abstract:
The thermal-mechanical effects on rotating internally pressured cylindrical shell irradiated by the laser beam have been calculated by using finite element method, and the physical parameters are obtained, such as temperature, stress, strain, and dis...
High-frequency spectrum behavior of laser scintillation in turbulent atmosphere
zhu wen-yue, ma xiao-shan, rao rui-zhong
2006, 18.
Abstract:
Field experiments were performed upon the laser beam propagation using a three-wavelength scintillometer in the maritime atmospheric boundary layer. The results show that the high-frequency spectrum behavior has something to do with the wavelength. T...
Comparisons of temperature field and stress field between heat-capacity laser and solid steady state laser
shen yong-ming, zhang yao-fei, hou tian-jin, chen de-zhang, qing guang-bi
2006, 18.
Abstract:
The temperature fields and stress fields of solid-state heat-capacity laser(SSHCL) and solid steady state laser were analyzed by finite-element analysis. The distance between LD arrays and laser crystal is 3.5 mm, LD array power 4 200 W×2, LD bars in...
Measuring method of impulse of single pulse laser with torsion pendulum
jin xing, hong yan-ji, chen jing-peng, fang juan, huang long-cheng
2006, 18.
Abstract:
Laser focuses onto a target, producing an ablation back-jet, which provides a micro-impulse. The torsion pendulum micro-impulse measure method was studied. The equations of oscillation were put forward under the thrust of ablation back-jet. And the i...
ICF与激光等离子体
Analysis of the unbalanced sidebands of phase modulation
li feng, wang jian-jun, ji fan, gu chun, zheng huan, gao kun, sui zhan, li ming-zhong, xu li-xin, ming ha
2006, 18.
Abstract:
Phase modulation was always used to prevent stimulated Brillouin scattering(SBS) which could damage the optics such as lenses in high power laser systems. Band pass filters such as fiber Bragg gratings were usually used in the optical fiber amplifier...
Influnce of Au cone on distribution of forward hot electrons
xiong jun, wang chen, fang zhi-heng, wang rui-rong, wang shi-ji
2006, 18.
Abstract:
The 30° Au conical target and Au foil target were irradiated by 20 TW ps P-polarized laser plasma, the characteristics of the forward produced hot electrons were studied. The hot electron number of the cone target was larger than that of the foil tar...
Mathematic model of the formation of a uniform liquid layer of binary fuel mixture inside a cryogenic target
wang jin-shan, zhu yu-qun, jiang chao
2006, 18.
Abstract:
A mathematic model is established that formulated the relationship between the working temperature and thermal gradient in producing a uniform liquid layer of binary fuel mixture inside a cryogenic spherical shell inertial confinement fusion target. ...
Scratches on optical component surface and its’ modulation on injecting laser
yang hao, feng guo-ying, han jing-hua, wang chao, su juan, xu qiao, zhu qi-hua
2006, 18.
Abstract:
Surface damage of optical components is the main cause of lowering the laser-induced damage threshold. Surface scratches are observed exactly, and are divided into three kinds, namely, one scratch, two scratches and multi-scratches. By the method of ...
Theoretical simulation of PVA coating using drop-tower technique
zhang zhan-wen, qi xiao-bo, tang yong-jian, li bo, wang chao-yang, huang yong
2006, 18.
Abstract:
Polyvinyl alcohol(PVA) capsule layer, as a gas barrier, were developed for the inertial confinement fusion(ICF) program. This paper presented the simulation study on fabrication of PVA coating using drop-tower technique. Based on the heat, mass and m...
Synthesis and characterization of MF aerogels
zhang yong, ren hong-bo, xu jia-jing, du kai, zhang lin, xiu peng
2006, 18.
Abstract:
MF aerogels were prepared from Melamine(P) and Formaldehyde(F) by sol-gel and supercritical drying process. The structure and function of the MF aerogels were characterized by means of SEM, TEM, BET and XRD, and the results indicate that the MF aerog...
Design of central control system for physical diagnosis in ICF experiment
lu jun-feng, yang cun-bang, ding yong-kun, chen ming, yin ze-jie
2006, 18.
Abstract:
Large ICF experiments require their physical diagnosis systems to be equipped with a sophisticated central control system, which makes sure the whole experiment would be safe and efficient. An integrated central control system framework for physical ...
Nonlinear propagation of localized wavefront deformation in high-power laser facility
liu hong-jie, jing feng, zuo yan-lei, wei xiao-feng, hu dong-xia, peng zhi-tao, li qiang, zhou wei, zhang kun, jiang lei, li zhi-jun, zuo ming
2006, 18.
Abstract:
A theory model which describes the localized wavefront deformation of the optics elements is set up. The propagation regularity of the high-power plane-wave in the optics elements with localized wavefront deformation is investigated by linearization ...
加速器技术
Fault diagnosis and performance evaluation for high current LIA based on radial basis function neural network
yang xing-lin, wang hua-cen, chen nan, dai wen-hua, li jin
2006, 18.
Abstract:
High current linear induction accelerator(LIA) is a complicated experimental physics device. It is difficult to evaluate and predict its performance. This paper presents a method which combines wavelet packet transform and radial basis function(RBF) ...
Photon beam position monitor signal processing system with logarithmic ratio method
lin shun-fu, sun bao-gen, gao hui, lu ping
2006, 18.
Abstract:
A photon beam position monitor signal processing system with logarithmic ratio method was designed for two-wire monitor in the machine diagnostic beamline(MDBL) at Hefei Light Source(HLS). A current-voltage converter was designed which is capable of ...
粒子束技术
Molecular dynamics simulation of ultrashort laser induced back-surface spallation in metallic film
liu xuan, zhou wei-min, zhao li-jie, zhang ya-fei
2006, 18.
Abstract:
Using molecular dynamics methods combined with two-step radiation heating model, a complete microscopic description of the dynamic progresses involved in laser induced back-surface spallation in metallic film in stress confinement regime is provided....
Experimental measurement of new spectral series of hydrogen gas discharge source bombarding target
wang da-lun, qin jian-guo, lai cai-feng, li yi-jun, li bing, liu rong
2006, 18.
Abstract:
In order to detect the new spectral series of hydrogen gas discharge source bombarding target more integrated, the experiment of bombarding targets with known particles or beams, such as electron and X-ray was carried out. Under the condition of 45° ...
Design of super narrow band and comb-shaped multi-channel photonic crystal filters
zheng hui-ru, zhou jun, xue chun-hua, zhao feng
2006, 18.
Abstract:
In this paper, two kinds of photonic crystals are designed. One is the super narrow band optical filter, the other is the comb-shaped multi-channel optical filter. Based on the transfer matrix method, after inserting one layer of heterogeneous medium...
脉冲功率技术
Laser triggered SF6-N2 mixture switch modeling
wang gang-hua, wang wen-dou, li hong-tao, lin qi-wen
2006, 18.
Abstract:
A numerical model of laser triggered SF6-N2 mixture switch is established on gas discharge physics. The photoionizations of SF6 and N2 are described by the double photon ionization model. The photoionization of hydrocarbon can be modeled as a three e...
High-power multi-pulse modulator
liu jin-liang, yin yi, yang jian-hua, chen dong-qun, feng jia-huai, zhou xiang, ye bing
2006, 18.
Abstract:
A high power multi-pulse modulator was presented which could generate three pulses with adjustable interval on the field-emission diode. In the system, a pulse transformer was employed to upgrade the discharging voltage of three groups of capacitors ...
Numerical research of the explosive magnetic flux compression generator of cylinder-cone configuration
wang yu-zhi, wang gui-rong, dong zhi-wei
2006, 18.
Abstract:
In order to study the physical nature of Explosive Magnetic Flux Compression Generator (EMFCG) of cylinder-taper configuration, a code MFCG(Ⅴ) was developed. A series of models have been calculated and analyzed by using this code. The computational r...