High Power Laser Science and Engineering, Volume. 12, Issue 4, 04000e50(2024)

Diagnosing the fast-heating process of the double-cone ignition scheme with X-ray spectroscopy

Yu Dai1...2, Haochen Gu1,2, Ke Fang1, Yihang Zhang1, Chenglong Zhang1,3, Yufeng Dong1, Zhe Zhang1,4,5,*, Xiaohui Yuan4,6, Yutong Li1,2,4,5, and Jie Zhang1,46,* |Show fewer author(s)
Author Affiliations
  • 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
  • 2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
  • 3State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing, China
  • 4Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai, China
  • 5Songshan Lake Materials Laboratory, Dongguan, China
  • 6Key Laboratory for Laser Plasma (MOE) and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
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    Figures & Tables(7)
    Experimental configuration and laser waveform used in the experiment. (a) Eight driving laser beams are used to directly drive the CHCl shells and push the fuel to collide together at the TCC. The heating laser is injected on a golden plane placed near the TCC to generate fast electrons. (b) The laser waveform and the motion patter calculated by Multi-1D.
    The time-resolved self-emission from the colliding area taken by the KB framing camera. (a)–(d) The X-ray emission of colliding plasmas without the heating laser beam injected. (e)–(h) The heating laser beam is injected from the left-hand side. The spots on the left-hand side are induced by the heating beam. (i) Part of (f) marked with targets and the heating laser beam.
    (a) Spatially resolved spectrum of shots with and without (inset) heating. (b) Profiles derived from the TCC position from the two shots (20 μm averaged on and below the TCC position), respectively.
    The 2D simulated results of FLASH at (a) 2.0 ns and (b) 6.3 ns. The left-hand side is the density distribution and the right-hand side is the electron temperature distribution. For clarity, the color map of temperature is logarithmic in (a) and linear in (b).
    Simulated results used to calculate the spectrum. (a), (b) The density and electron temperature distribution, respectively, in the vertical direction simulated by FLASH. (c) The transverse distribution of the colliding plasma. The simulated density (blue line) is compared with the experimental result (stars). The electron temperature before (red solid line) and after heating (red dotted line) is also shown here.
    (a) The comparison between the measured and the calculated spectrum. For the calculated results, the temperature range from 500 to 700 eV is included. The measured result is the same as the Figure 3(b) ‘with heating’ with errors marked by the shadow area. The Cln+ population ratio of He-like ions to Li-like ions is shown in (b), together with the line ratio of ‘w’ to ‘jkl’.
    (a) The velocity distribution of the stagnated stage derived from FLASH. (b) Spatial emissivity of the plasma in different depths along the sight line.
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    Yu Dai, Haochen Gu, Ke Fang, Yihang Zhang, Chenglong Zhang, Yufeng Dong, Zhe Zhang, Xiaohui Yuan, Yutong Li, Jie Zhang. Diagnosing the fast-heating process of the double-cone ignition scheme with X-ray spectroscopy[J]. High Power Laser Science and Engineering, 2024, 12(4): 04000e50

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    Paper Information

    Category: Research Articles

    Received: Apr. 7, 2024

    Accepted: May. 24, 2024

    Posted: May. 24, 2024

    Published Online: Sep. 20, 2024

    The Author Email: Zhe Zhang (zzhang@iphy.ac.cn), Jie Zhang (jzhang1@sjtu.edu.cn)

    DOI:10.1017/hpl.2024.32

    CSTR:32185.14.hpl.2024.32

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