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Dive into the research topics where Jiang Xiao-Hua is active.

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Featured researches published by Jiang Xiao-Hua.


Chinese Physics B | 2010

Generation and characterization of millimeter-scale plasmas for the research of laser plasma interactions on Shenguang-III prototype

Li Zhichao; Zheng Jian; Ding Yongkun; Yin Qiang; Jiang Xiao-Hua; Guo Liang; Yang Dong; Wang Zhe-Bin; Zhang Huan; Liu Yonggang; Zhan Xia-Yu; Tang Qi

In order to produce millimeter-scale plasmas for the research of laser-plasma interactions (LPIs), gasbag target is designed and tested on Shenguang-III prototype laser facility. The x-ray pinhole images show that millimeter-scale plasmas are produced with the gasbag. The electron temperature inferred from the stimulated Raman scattering (SRS) spectrum is about 1.6 keV. The SRS spectrum also indicates that the electron density has a ∞at region within the duration of 200 ps. The obvious difierences between the results of the gasbag and that of the void half hohlraum show the feasibility of the gasbag target in creating millimeter-scale plasmas. The LPIs in these millimeter-scale plasmas may partially mimic those in the ignition condition because the duration of the existence of a ∞at plasma density is much larger than the growth time of the two main instabilities, i.e., SRS and stimulated Brillouin scattering (SBS). So we make the conclusion that the gasbag target can be used to research the large-scale LPIs.


Plasma Science & Technology | 2014

Study of the Performance of a Streaked Optical Pyrometer System for Temperature Measurement of Shocked Materials

Zhang Chen; Liu Hao; Wang Zhe-Bin; Jiang Xiao-Hua; Zhang Huige; Liu Yonggang; Li Zhichao; Li Sanwei; Yang Dong; Ding Yongkun; Zhao Bin; Hu Guangyue; Zheng Jian

A streaked optical pyrometer (SOP) is developed and calibrated for the measurement of the temperature of shocked materials. In order to achieve a higher relative sensitivity, a one-channel scheme is adopted for the system. The system is calibrated with a shocked step-shaped aluminum sample in the SG-III prototype laser facility. The relation between the count number in the detection system and the sample temperature is thus obtained, which can be adopted to infer the temperature of any shocked materials in future experiments.


Chinese Physics Letters | 2011

Methods of Generation and Detailed Characterization of Millimeter-Scale Plasmas Using a Gasbag Target

Li Zhichao; Zheng Jian; Jiang Xiao-Hua; Wang Zhe-Bin; Yang Dong; Zhang Huan; Li Sanwei; Wang Feng; Peng Xiaoshi; Yin Qiang; Zhu Fang-Hua; Guo Liang; Yuan Peng; Liu Shenye; Ding Yongkun

Gasbag targets are useful for the research of laser-plasma interactions in inertial confinement fusion, especially in the laser overlapping regime. We report that on the Shengguang-II laser facility, millimeter-scale plasmas are successfully generated by four 0.35 μm laser beams using a gasbag target. Multiple diagnostics are applied to characterize the millimeter-scale plasmas in detail. The images from the x-ray pinhole cameras confirm that millimeter-scale plasmas are indeed created. An optical Thomson scattering system diagnoses the electron temperature of the CH filling plasmas by probing the thermal ion-acoustic fluctuations, which indicates that the electron temperature has a 600 eV flat roof in 0.7–1.3 ns. Another key parameter, i.e. the electron density of the millimeter-scale plasmas, is inferred by the spectrum of the back stimulated Raman scattering of an additional 0.53 μm laser beam. The inferred electron density keeps stable at 0.1nc in early time consistent with the controlled filling pressure and splits into a higher density in late time, which is attributed to the blast wave entering into the SRS interaction region.


Chinese Physics Letters | 2011

Shock-Timing Experiment Using a Two-Step Radiation Pulse with a Polystyrene Target

Wang Feng; Peng Xiaoshi; Jiao Chun-Ye; Liu Shenye; Jiang Xiao-Hua; Ding Yongkun

A shock-timing experiment plays an important role in inertial confinement fusion studies, and the timing of multiple shock waves is crucial to the performance of inertial confinement fusion ignition targets. We present an experimental observation of a shock wave driven by a two-step radiation pulse in a polystyrene target. The experiment is carried out at Shen Guang III Yuan Xing (SGIIIYX) laser facility in China, and the generation and coalescence of the two shock waves, originating from each of the two radiation steps, is clearly seen with two velocity interferometers. This two-shock-wave coalescence is also simulated by the radioactive hydrodynamic code of a multi-1D program. The experimental measurements are compared with the simulations and quite good agreements are found, with relatively small discrepancies in shock timing.


Chinese Physics Letters | 2005

Thomson scattering process in laser-produced plasmas

Yu Quan-Zhi; Zhang Jie; Li Yu-Tong; Zheng Jun; Yan Fei; Lu Xin; Wang Zhe-Bin; Zheng Jian; Yu Chang-Xuan; Jiang Xiao-Hua; Li Wen-Hong; Liu Shenye; Zheng Zhi-Jian

We present the evolutions of the electron temperature and plasma expansion velocity with Thomson scattering experiment. The observed time-resolved ion-acoustic image is reproduced by a numerical code which couples the Thomson scattering theory with the output parameters of the one-dimensional hydrocode MEDUSA.


SCIENTIA SINICA Physica, Mechanica & Astronomica | 2018

Recent progress of hohlraum physics experiments in indirect-driven ICF in China

Li SanWei; Yang Dong; Li Xin; Li ZhiChao; Guo Liang; Xie XuFei; Kuang Longyu; Zhang Lu; Huo WenYi; Wu ChangShu; Chen YaoHua; Song Peng; Zhang HuaSen; Cao Zhurong; Hu Xin; Hou LiFei; Yi RongQing; Jiang Xiao-Hua; Li Qi; Song Tianming; Peng Xiaoshi; Xu Tao; Li YuLong; Deng Bo; Deng Keli; Wang Qiangqiang; Yang Pin; Li Hang; Yuan Zheng; Wei Huiyue

In recent years, hohlraum experiments have been performed extensively on Shenguang series laser facilities in the context of laser indirect-drive inertial confinement fusion. Multiple aspects about the hohlraumenergetics, drive symmetry and plasma condition are studied by a variety of methods resolving different photon ranges and multiple viewing areas. To improve the experimental uncertainty, several diagnostics are optimized and calibrated, also the power balance and pointing accuracy of laser beams are evaluated and improved. These works lead a rapid progress on hohlraum experimental capabilities and a series of successful experimental campaigns. In order to further optimize the hohlraum performance, other hohlraum geometry (the spherical hohlram with six LEHs and the cylindrical hohlraum with six LEHs) and hohlraum wall material (depleted Uranium and foam Au) are explored as well. Hohlraum experiments and modeling on Shenguang series laser facilities demonstrated quantitative understanding of the laser conversion, X-ray ablation and plasma motion in different regions.


SCIENTIA SINICA Physica, Mechanica & Astronomica | 2018

Laser plasma instability in indirect-drive inertial confinement fusion

Yang Dong; Li Zhichao; Li Sanwei; Hao Liang; Li Xin; Guo Liang; Zou ShiYang; Jiang Xiao-Hua; Peng Xiaoshi; Xu Tao; Liu Yulong; Zheng Chun-Yang; Cai Hong-Bo; Liu Zhan-Jun; Zheng Jian; Gong Tao; Wang Zhe-Bin; Li Hang; Kuang Longyu; Li Qi; Wang Feng; Liu Shenye; Yang Jia-Min; Jiang Shao-En; Zhang Bao-Han; Ding Yongkun

In indirect-drive inertial confinement fusion (ICF), the incident laser beam could excite laser plasma instabilities (LPI) such as stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS) and two plasmon decay (TPD) besides gently heat the hohlraum through collisional absorption. These instabilities would largely reduce the X-ray conversion and degrade the drive symmetry of the radiation environment. In addition, when the amplitude of parametric instability increases to a certain level, there would be interplay between different instabilities, which makes LPI complicated and unpredictable. Therefore, LPI has become one of the major challenge in achieving ignition. LPI research during recent few years made great strides in identifying, understanding, and controlling instabilities in the context of laser fusion. This paper reviews the progress in this important field according to laser (L), plasma (P), and instability (I). Prospects for the application of our improved understanding for indirect drive ICF and some exciting research opportunities are also discussed.


Plasma Science & Technology | 2006

Numerical Simulation of the Thomson Scattering Experiment Performed with 0.351μm Laser-Produced Aluminum Plasmas

Zhao Bin; Li Hong; Wang Zhe-Bin; Bai Bo; Yu Chang-Xuan; Zheng Jian; Jiang Xiao-Hua; Li Wen-Hong; Yuan Xiao-Dong; Zheng Zhi-Jian

The evolutions of the electron temperatures of aluminum plasmas produced with 0.351 ?m laser are simulated by means of one-dimensional hydrodynamic code. The simulations show that the plasma geometry has strong influence on the electron temperatures evolution while the effect of the flux limiter is not so significant. The simulations are in good agreement with the experiments only at some spatial points. A full comparison between the simulations and experiments indicates that the one-dimensional code is not accurate enough to characterize the laser-produced plasmas. A post-processor code based on the hydro code is developed to generate the streak image of the Thomson scattering spectra, which can be directly compared with the experimental data.


Chinese Physics Letters | 2003

Research on Stimulated Raman Scattering Spectrum for Cavity Targets at the Shenguang-II Laser Facility

Zhang Jia-Tai; Liu Zhan-Jun; Zheng Chun-Yang; Jiang Xiao-Hua

The stimulated Raman scattering (SRS) experiments with half-cavity targets have been carried out at the Shenguang-II laser facility. The imitative optic multiple-channel analyser (OMA) spectrograph is used to obtain the SRS experimental spectrum. We have developed a two-dimensional laser plasma interaction (LPI2D) code. The SRS spectrum for half-cavity targets is analysed theoretically and simulated numerically using the LPI2D code. These simulations quantitatively reproduce the experimental results firstly.


Chinese Physics Letters | 2001

Collective Thomson Scattering from Laser-Produced Plasmas

Bai Bo; Zheng Jian; Yu Chang-Xuan; Liu Wandong; Jiang Xiao-Hua; Yuan Xiaodong; Zheng Zhi-Jian; Xu Bing; Xiang Yong; Zhao Chun-Zhuo

Time-resolved Thomson scattering was successfully performed to diagnose the parameters (ZTe, Ue and Ui) of laser-produced gold plasma. The results show that the collisionless dynamic form factor is accurate enough to be used for reducing the plasma parameters from the experimental data.

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Liu Shenye

China Academy of Engineering Physics

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Ding Yongkun

China Academy of Engineering Physics

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Peng Xiaoshi

China Academy of Engineering Physics

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Wang Zhe-Bin

University of Science and Technology of China

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Wang Feng

China Academy of Engineering Physics

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Zheng Jian

University of Science and Technology of China

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Liu Yonggang

China Academy of Engineering Physics

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Yang Dong

China Academy of Engineering Physics

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Li Zhichao

University of Science and Technology of China

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Zheng Zhi-Jian

China Academy of Engineering Physics

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