2018 Vol. 30, No. 4

Recommend Articles
高功率激光与光学
本期封面及目录
Cover and Contents, High Power Laser and Particle Beams, No 4, Vol 30, 2018
2018, 30.
Research Letter
New development of laser illumination technology for high-speed photography
Chang Lihua, Wang Xu, Wen Weifeng, Song Zhenfei, Wang Wei, Ran Maojie, He Hui, Gao Peng
2018, 30: 040101. doi: 10.11884/HPLPB201830.180042
Abstract:
In this paper, laser speckle and interference fringe were effectively restrained by the use of diffractive optical element for smoothing beam, multimode fiber and the lens coupling expander technology. The vignette phenomenon on the imaging plane was...
High Power Laser and Optic
High beam quality and high power short-pulse laser with 400 Hz
Jin Quanwei, Pang Yu, Jiang Jianfeng, Tan Liang, Cui Lingling, Wei Bin, Sun Yinhong, Tang Chun
2018, 30: 041001. doi: 10.11884/HPLPB201830.170124
Abstract:
A high energy, high beam quality short-pulse diode-pumped Nd: YAG master oscillator power-amplifier (MOPA) laser with two amplifier stages is demonstrated. The two-rod birefringence compensation is used as beam quality control measure, which presents...
Effect of the gain medium position on the external second harmonic generation conversion efficiency
Li Jiaqi, Feng Guoying, Deng Guoliang, Chen Yongfu, Zhou Shouhuan
2018, 30: 041002. doi: 10.11884/HPLPB201830.170452
Abstract:
The effect of the gain medium position in the resonator on the external second harmonic generation (SHG) conversion efficiency was studied. A MgO-doped periodically poled LiNbO3 crystal (MgO: PPLN) was utilized to achieve a 532-nm green-light laser o...
Laser induced damage characteristics in fused silica surface irradiated by 1064 nm and 532 nm ns laser simultaneously
Ye Cheng, Qiu Rong, Jiang Yong, Gao Xiang, Guo Decheng, Zhou Qiang, Deng Chengfu
2018, 30: 041003. doi: 10.11884/HPLPB201830.170387
Abstract:
The wavelengths of 1064 nm and 532 nm of the pulsed Nd: YAG laser were used to irradiate the fused silica to study the interaction between different wavelengths of laser with fused silica. The laser induced damage characteristics in fused silica surf...
Heat transfer characteristics of mini pin-fin channels
Liu Dong, Shu Yu, He Weiran, Hu Anjie, Xu Hailun
2018, 30: 041004. doi: 10.11884/HPLPB201830.170397
Abstract:
The heat transfer performance of deionized water flowing in the large length/width ratio pin-fin micro channel was experimentally studied with two different ratios of channel to fin. The results show that, when the Reyonolds number is less than 650 a...
440 nm solid-state blue laser produced by a monolithic periodically poled lithium niobate crystal based on cascaded third-harmonic generation
Zhang Xuguang, Wang Weimin, Lu Yanhua, Xu Xiafei, Zhang Lei, Ren Huaijin, Liu Fang, Sun Jun, Ruan Xu, Yan Xuejing, Sun Shujuan
2018, 30: 041005. doi: 10.11884/HPLPB201830.170483
Abstract:
A 440 nm solid-state blue laser produced by a periodically poled lithium niobate (PPLN) crystal based on cascaded third-harmonic generation (THG) is introduced. According to Sellmeier equation and phase-matching conditions of second-harmonic generati...
ICF and Laser Plasma
Effect of inflating process on surface morphology of microspheres
Qi Menghui, Huang Yong, Shi Ruiting, Feng Jianhong, Hu Yong, Yi Yong, Li Bo, Tang Changhuan, Zhang Zhanwen
2018, 30: 042001. doi: 10.11884/HPLPB201830.170311
Abstract:
The morphology on the surface of hollow glass mircospheres(HGMs) in inflating process was investigated in this work. The experimental results indicate that the main factors influencing the surface of HGM include temperature and pressure, and higher t...
Rheological and spinning properties of polystyrene/nano aluminum composites
Chen Wenjiao, Xie Rui, Luo Wenli, Liu Cailin, Peng Bihui, Yang Haijun, Ren Xianyan
2018, 30: 042002. doi: 10.11884/HPLPB201830.170352
Abstract:
PS/AlNPs composite fibers were prepared by adding AlNPs into PS to finish the simulation study of conductive matrix materials for Z-pinch: deuterated polystyrene/nano-aluminum (DPS/AlNPs). The effects of temperature and shear rate on the rheological ...
High Power Microwave
One way to evaluate high power microwave's effect on computers in the building
Wang Zhenkun, Ning Hui, Jiang Tingyong
2018, 30: 043001. doi: 10.11884/HPLPB201830.170333
Abstract:
One way to evaluate high power microwave's effect to computers in the building is proposed. Finite-difference Time-domain method is used to compute the electromagnetic field in the building and we can get the greatest field of every point in the buil...
Simulation research on influence of RF breakdown plasma on performance of relative backward wave oscillator
Yuang Yuzhang, Zhang Jun, Bai Zhen, Zhong Huihuang
2018, 30: 043002. doi: 10.11884/HPLPB201830.170444
Abstract:
RF breakdown of the metallic high frequency structures is an important reason of power decrease and pulse shortening; it is also an important limitation of the development of high power microwave (HPM) to higher power and longer pulse. The physical p...
High power microwave hot-carriers detector in liquid nitrogen
Yan Feng, Yang Meng, Liu Min, Liu Xiaolong, Liu Jing, Xiong Zhengfeng, Liu Ying
2018, 30: 043003. doi: 10.11884/HPLPB201830.170460
Abstract:
In order to enhance the sensitivity of high power microwave detector and reduce the impact of ambient temperature, research of hot-carriers detector in liquid nitrogen was carried out. Kovar alloy was used in the BJ-100 waveguide HPM detector to enha...
Design of array antenna based on slots coupling of rectangular wave-guide
Yu Longzhou, Yuan Chengwei, He Juntao, Zhang Qiang
2018, 30: 043004. doi: 10.11884/HPLPB201830.170443
Abstract:
A linear array antenna with high power-handling capacity is designed in this article, which is feed through slots of rectangle wave-guide. A new cambered slot coupling structure is applied in the antenna, which radiation element is a small antenna, a...
Design and analysis of ladder-type microstrip antenna with electranagnetic bandgap structure
Hao Jianhong, Cao Zhanguo, Fan Zonghao, Wang Hui, Guo Chao
2018, 30: 043005. doi: 10.11884/HPLPB201830.170419
Abstract:
In order to reduce the high temperature damage caused by atmospheric friction, aircraft radar antenna will generally be equipped with radome or dielectric window. In this paper, the bandgap characteristic of the electromagnetic bandgap (EBG) structur...
Terahertz Technology
Particle-in-cell simulation of electron-excited surface plasmon polaritons
Liu Laqun, Zhang Ping, Wang Huihui
2018, 30: 043101. doi: 10.11884/HPLPB201830.170399
Abstract:
The resonance process of free electrons and external electric fields in noble metal (Ag) is described by using the polarization current difference equation. The difference equation is combined with the Maxwell equation. The finite-difference time-dom...
Interaction of Terahertz wave with plasma based on Z-FDTD
Wu Xiguang, Hu Yang, Wang Ping, Nan Lin
2018, 30: 043102. doi: 10.11884/HPLPB201830.170309
Abstract:
Using the Z transform finite difference time domain method (Z-FDTD), we calculated Terahertz wave's transmission characteristics in plasma sheath, acquired the Terahertz wave power transmission and reflection coefficients with the change of the EM fr...
Complex Electromagnetic Environment
Cognitive operations and intelligentizing characterization for battlefield electromagnetic operational environment
Que Weiyan
2018, 30: 043201. doi: 10.11884/HPLPB201830.170377
Abstract:
Focusing on intelligentizing characterization for battlefield electromagnetic operational environment, firstly, the relations between cognitive operations and operational art are introduced, and operations in electromagnetic domain, electromagnetic s...
Particle Beams Technology
Numerical calculation and analysis of proton radiation effects on CCD based on Monte Carlo method
Xue Yuanyuan, Wang Zujun, Liu Jing, He Baoping, Yao Zhibin, Liu Minbo, Sheng Jiangkun, Ma Wuying, Dong Guantao, Jin Junshan
2018, 30: 044001. doi: 10.11884/HPLPB201830.170248
Abstract:
Numerical calculation and analysis of proton radiation effects on CCD based on Monte Carlo method were developed by Geant4, a 3-D Monte Carlo code. The projected ranges and Bragg peaks of protons in Si and SiO2 were calculated and the results were in...
Gamma ray sensitivity of neutron detector based on microchannel plate
Zhang Xiaodong, Ouyang Xiaoping, Weng Xiufeng, Jiang Wen'gang, Zhang Jianfu, Tan Xinjian, He Junzhang, Wei Chen
2018, 30: 044002. doi: 10.11884/HPLPB201830.170388
Abstract:
A new ultrafast pulse neutron detector based on MCP is introduced. The γ-ray sensitivity of the detector was investigated through simulation and experiment. A model of theoretical simulation was set up for γ-ray sensitivity calculation. In this model...
Pulsed Power Technology
Performance test and analysis based on solid-state high repetitive frequency LTD
Feng Yu, Mao Yuebo, Luo Haiyun, Jiang Weihua
2018, 30: 045001. doi: 10.11884/HPLPB201830.170417
Abstract:
Solid state linear transformer driver(LTD) is a new high frequency pulsed power generator with unique performance. This article presents an experimental research based on the basic characteristics of LTD in detail. The measurement includes three part...
Design of 20 kV/20 kHz /100 A high voltage pulse generator
Shi Xiaoyan, Ding Enyan, Liang Qinjin, Yang Zhoubing, Zhang Yunjian
2018, 30: 045002. doi: 10.11884/HPLPB201830.170360
Abstract:
The paper presents a design of high voltage pulse generator based on high voltage switch formed by a stack of metal oxide semiconductor field-effect transistor (MOSFET). Two pulses at both ends of out metal layer in transmission line are generated by...
Reliability of large LTD device analysis
Ji Ce, Zhou Liangji, Jiao Jian, Ren Fuchun, Chen Lin, Jiang Jihao, Zhao Yue
2018, 30: 045003. doi: 10.11884/HPLPB201830.170341
Abstract:
A large LTD device capable of delivering about 50 MA pulsed current to load consists of hundreds of thousands of capacitors, switches and trigger units. To achieve high reliability of such an enormous system is quite difficult with the series system ...
Design of bipolar pulsed magnetron sputtering power supply
Li Bo, Li Boting, Ye Chao, Tan Weiwei, Huang Bin, Zhao Juan, Lu Xiangyang, Huang Yupeng, Zhang Xin, Qi Zhuoyun, Kang Chuanhui
2018, 30: 045004. doi: 10.11884/HPLPB201830.170393
Abstract:
Bipolar pulsed power supply is one of the key equipment in magnetron sputtering system. Based on the working principle and technical characteristics of magnetron sputtering, a bipolar pulsed power supply with output voltage of 0-800 V, pulse width of...
Confluent structure of the multi-pulse linear induction accelerator
Huang Ziping, Li Xin, Li Yuan, Chen Sifu, Ye Yi
2018, 30: 045005. doi: 10.11884/HPLPB201830.170203
Abstract:
Touches off the parallel connected pulse forming lines one by one, use silicon diodes to isolates the high voltage pulses, several single square pulses can be combined to form a MHz repetition rate multi-pulses string. The structure of the confluence...
Frequency response characteristics of self-integralting capacitive divider
Wei Bing, Gong Boyi, Wang Zhi, Qing Yanling, Yuan Jianqiang, Feng Shuping
2018, 30: 045006. doi: 10.11884/HPLPB201830.170369
Abstract:
A self-integrating capacitive divider has been designed to measure the high voltage pulse transmitting in a cable with rising time of 1ns. The frequency characteristics have been analysed by the equivalent circuit that comprises stray parameters of c...
Experimental study of fracturing under electric pulse for large cement sample
Fu Rongyao, Sun Yaohong, Liu Kun, Gao Yinghui, Xu Xuzhe, Yan Ping
2018, 30: 045007. doi: 10.11884/HPLPB201830.170347
Abstract:
The electric pulse discharge experimental platform of 20 kV/40 kJ was set up and the impact fracture test of large cement sample was carried out. In order to simulate the actual working conditions, the discharge electrode was put into an insulated sl...
Accelerator Technology
Switchyard design for Shanghai soft X-ray free electron laser facility
Gu Duan, Wang Zhen, Huang Dazhang, Gu Qiang, Zhang Meng
2018, 30: 045101. doi: 10.11884/HPLPB201830.170303
Abstract:
In this article, a feasible switchyard design is proposed for the Shanghai soft X-ray Free Electron Laser (SXFEL) facility. In the proposed scheme, a switchyard is used to transport the electron beam to different undulator lines. Three-dimensional st...
Development of beam profile monitor using Kirkpatrick Baez mirrors
Zhu Dechong, Yue Junhui, Sui Yanfeng, Ji Daheng, Cao Jianshe, Ye Kairong, Chen Jie, Tian Shunqiang, Leng Yongbin
2018, 30: 045102. doi: 10.11884/HPLPB201830.170415
Abstract:
A Kirkpatrick Baez mirror imaging system has been designed and installed to measure the beam transverse profile and emittance of SSRF storage ring. The new system could be interchangeable with the original X-pinhole system. Two orthogonal cylindrical...
Nuclear Science and Engineering
Correlation of VUV intensity and basic plasma parameters
Long Feifei, Ming Tingfeng, Zhou Fan, Li Kai, Wang Zhijun, Zhuang Qing, Wu Chengrui, Wang Yumin, Huang Juan, Zang Qing, Zhang Tao, Liu Haiqing, Gao Xiang
2018, 30: 046001. doi: 10.11884/HPLPB201830.170378
Abstract:
The high-speed vacuum ultraviolet (VUV) imaging system on the Experimental Advanced Superconducting Tokamak (EAST) is an optic system with both high temporal and spatial resolutions, and it can selectively measure VUV photons with a wavelength of 13....
Three-dimensional Monte Carlo transport code JMCT in shielding engineering application
Shen Jingwen, Hu Ye, Zheng Yu, Ma Xubo
2018, 30: 046002. doi: 10.11884/HPLPB201830.170222
Abstract:
Radiation shielding calculation of nuclear facilities has always been one of the difficulties in engineering application of Monte Carlo method for its large scale calculation and deep penetration characteristics. Two international benchmarks, publish...
Nuclide spectrum feature extraction and nuclide identification based on sparse representation
Zhang Jiangmei, Ji Haibo, Feng Xinghua, Wang Kunpeng
2018, 30: 046003. doi: 10.11884/HPLPB201830.170435
Abstract:
A sparse representation based method for nuclide spectrum feature extraction is proposed. The essence of this method is to decompose the energy spectrum on the best distinguishable sparse atom. The sparse decomposition method is used to decompose the...
Applications of Laser and Particle Beams
Improving water vapor permeability of polyurethane synthetic leather by drilling micro-hole arrays with 343 nm femtosecond laser
Guo Liang, Ren Bo, Wang Yewei, Tu Xin, Zhang Qingmao
2018, 30: 049001. doi: 10.11884/HPLPB201830.170044
Abstract:
In this paper, 343 nm femtosecond laser and as a comparison, 1030 nm femtosecond and 1064 nm nanosecond lasers were used for improving water vapor permeability (WVP) of polyurethane (PU) synthetic leather. The morphologies of micro-hole were comparat...