|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Generation of strong magnetic fields with a laser-driven coil显示文摘As a promising new way to generate a controllable strong magnetic field, laser-driven magnetic coils have attracted interest in many research fields. In 2013, a kilotesla level magnetic field was achieved at the Gekko XⅡ laser facility with a capacitor–coil target. A similar approach has been adopted in a number of laboratories, with a variety of targets of different shapes. The peak strength of the magnetic field varies from a few tesla to kilotesla, with different spatiotemporal ranges. The differences are determined by the target geometry and the parameters of the incident laser. Here we present a review of the results of recent experimental studies of laser-driven magnetic field generation, as well as a discussion of the diagnostic techniques required for such rapidly changing magnetic fields. As an extension of the magnetic field generation, some applications are discussed. | Zhe Zhang Baojun Zhu Yutong Li Weiman Jiang Dawei Yuan Huigang Wei Guiyun Liang Feilu Wang Gang Zhao Jiayong Zhong Bo Han Neng Hua Baoqiang Zhu Jianqiang Zhu Chen Wang Zhiheng Fang Jie Zhang | 2018 | High Power Laser Science and Engineering2018，6，3： | 2 |
| 2 | Modelling loop-top X-ray source and reconnection outflows in solar flares with intense lasers显示文摘 | Zhong Jiayong Li Yutong Wang Xiaogang Wang Jiaqi Dong Quanli Xiao Chijie Wang Shoujun Liu Xun Zhang Lei An Lin Wang Feilu Zhu Jianqiang Gu Yuan He Xiantu Zhao Gang Zhang Jie | 2010 | Nature Physics2010，，12： | 1 |
| 3 | Modelling loop-top X-ray source and reconnection outflows in solar flares with intense lasers显示文摘 | Zhong Jiayong Li Yutong Wang Xiaogang Wang Jiaqi Dong Quanli Xiao Chijie Wang Shoujun Liu Xun Zhang Lei An Lin Wang Feilu Zhu Jianqiang Gu Yuan He Xiantu Zhao Gang Zhang Jie | 2010 | Nature Physics2010，，12： | 1 |
| 4 | Emission mechanism for the silicon He-α lines in a photoionization experiment显示文摘In this paper, we present a reanalysis of the silicon He-α X-ray spectrum emission in Fujioka et al.’s 2009 photoionization experiment. The computations were performed with our radiative-collisional code, RCF. The central ingredients of our computations are accurate atomic data, inclusion of satellite lines from doubly excited states and accounting for the reabsorption of the emitted photons on their way to the spectrometer. With all these elements included, the simulated spectrum turns out to be in good agreement with the experimental spectrum. | Bo Han Feilu Wang David Salzmann Jiayong Zhong Gang Zhao | 2021 | High Power Laser Science and Engineering2021，9，1： | 1 |
| 5 | Measurement and analysis of K-shell lines of silicon ions in laser plasmas显示文摘We present laboratory measurement and theoretical analysis of silicon K-shell lines in plasmas produced by Shenguang II laser facility, and discuss the application of line ratios to diagnose the electron density and temperature of laser plasmas.Two types of shots were carried out to interpret silicon plasma spectra under two conditions, and the spectra from 6.6 ?A to6.85 ?A were measured. The radiative-collisional code based on the flexible atomic code(RCF) is used to identify the lines, and it also well simulates the experimental spectra. Satellite lines, which are populated by dielectron capture and large radiative decay rate, influence the spectrum profile significantly. Because of the blending of lines, the traditional G value and R value are not applicable in diagnosing electron temperature and density of plasma. We take the contribution of satellite lines into the calculation of line ratios of He-α lines, and discuss their relations with the electron temperature and density. | Bo Han Feilu Wang Jiayong Zhong Guiyun Liang Huigang Wei Dawei Yuan Baojun Zhu Fang Li Chang Liu Yanfei Li Jiarui Zhao Zhe Zhang Chen Wang Jun Xiong Guo Jia Neng Hua Jianqiang Zhu Yutong Li Gang Zhao Jie Zhang | 2018 | High Power Laser Science and Engineering2018，6，2： | 1 |
| 6 | Physical parameter estimation with MCMC from observations of Vela X-1显示文摘We present a parameter estimate for continua, and He-like triplets of the high resolution X-ray spectra with a Bayesian inference and a Markov Chain Monte Carlo(MCMC) tool. The method is applied for Vela X-1 with three different orbital phases(φ), Eclipse, φ = 0.25, and φ = 0.5, which are adopted from the Chandra High-Energy Transmission Grating Spectrometer(HETGS). A parameterized two-component power-law model [Sako et al., Astrophys. J. 525, 921(1999)] and a multi-Gaussian model are applied to model these continua and He-like triplets, respectively. A uniform distribution over each parameter is used as the prior belief. Posterior probability distribution functions of parameters and the covariances among them are explored by using the MCMC method. The main advantages are(i) all model-based parameters are set to be free instead of artificially fixing some of the parameters during the data-model fitting;(ii) the contributions from satellite lines are considered;(iii) backgrounds are treated as a correction to the observation errors;and(iv) the confidence interval of each parameter is given. The fitted results show that the column density of scatter component(N_H^(scat)) varies from phase to phase, which imply a non-spherical structure of the stellar wind in Vela X-1.Moreover, the wind velocities derived from main lines of each set of He-like triplets show better self-consistency than those in previous publications, which could provide a reliable approach for the diagnostics of photoionized plasma in astrophysical objects and the laboratory. | Lan Zhang Feilu Wang Xiangxiang Xue Dawei Yuan Huigang Wei Gang Zhao | 2018 | High Power Laser Science and Engineering2018，6，2： | 0 |
| 7 | Laboratory study of astrophysical collisionless shock at SG-Ⅱ laser facility显示文摘Astrophysical collisionless shocks are amazing phenomena in space and astrophysical plasmas, where supersonic flows generate electromagnetic fields through instabilities and particles can be accelerated to high energy cosmic rays. Until now, understanding these micro-processes is still a challenge despite rich astrophysical observation data have been obtained. Laboratory astrophysics, a new route to study the astrophysics, allows us to investigate them at similar extreme physical conditions in laboratory. Here we will review the recent progress of the collisionless shock experiments performed at SG-Ⅱ laser facility in China. The evolution of the electrostatic shocks and Weibel-type/filamentation instabilities are observed. Inspired by the configurations of the counter-streaming plasma flows, we also carry out a novel plasma collider to generate energetic neutrons relevant to the astrophysical nuclear reactions. | Dawei Yuan Huigang Wei Guiyun Liang Feilu Wang Yutong Li Zhe Zhang Baojun Zhu Jiarui Zhao Weiman Jiang Bo Han Xiaoxia Yuan Jiayong Zhong Xiaohui Yuan Changbo Fu Xiaopeng Zhang Chen Wang Guo Jia Jun Xiong Zhiheng Fang Shaoen Jiang Kai Du Yongkun Ding Neng Hua Zhanfeng Qiao Shenlei Zhou Baoqiang Zhu Jianqiang Zhu Gang Zhao Jie Zhang | 2018 | High Power Laser Science and Engineering2018，6，3： | 0 |
| 8 | Preliminary Exploration of Areal Density of Angular Momentum for Spiral Galaxies显示文摘The specific angular momenta(j_(t))of stars,baryons as a whole and dark matter halos contain clues of vital importance about how galaxies form and evolve.Using a sample of 70 spiral galaxies,we perform a preliminary analysis of j_t,and introduce a new quantity,e.g.,areal density of angular momentum(ADAM)(j_(t)M_(*)/(2R_(d))^(2))as an indication for the existence of jet(s)in spiral galaxies.The percentage of spiral galaxies having jet(s)shows a strong correlation with ADAM,although the present sample is incomplete. | Lan Zhang Feilu Wang Xiangxiang Xue David Salzmann Baifei Shen Zehao Zhong Gang Zhao | 2023 | Research in Astronomy and Astrophysics2023，23，8： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员