Polychromatic drivers for inertial fusion energy

Zhao, Yao and Sheng, Zhengming and Cui, Zijian and Ren, Lei and Zhu, Jianqiang (2022) Polychromatic drivers for inertial fusion energy. New Journal of Physics, 24 (4). 043025. ISSN 1367-2630 (https://doi.org/10.1088/1367-2630/ac608c)

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Abstract

Abstract: Although tremendous achievements have been made toward inertial confinement fusion, laser plasma instabilities (LPIs) remain to be an inevitable problem for current drive schemes. To mitigate these instabilities, significant efforts have been paid to produce high-power broadband ultraviolet lasers. However, no practical scheme has been demonstrated up to now for efficient triple-frequency conversion of broadband laser. Here we propose the design of polychromatic drivers for the generation of multicolor beams mainly based upon the optical parametric amplification, which can significantly enhance the third-harmonic conversion efficiency. Each polychromatic light has four colors of monochromatic beamlets with a full spectrum width of 3%, and the beamlet colors of any two adjacent flanges are different. The suppression effects of such polychromatic lights have been investigated via large scale particle-in-cell simulations, which indicate that more than 35% of the incident energy can be saved from the LPIs compared with monochromatic lasers for the direct-drive scheme, or high-density filled target for the indirect-drive scheme. The proposed polychromatic drivers are based on the matured technologies, and thus may pave the way towards realization of robust and high-efficiency fusion ignition.

  • Item type:Article
    ID code:80254
    Dates:
    Date
    Event
    20 April 2022
    Published
    20 April 2022
    Published Online
    23 March 2022
    Accepted
    28 October 2021
    Submitted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:21 Apr 2022 13:19
    Last modified:17 Apr 2024 00:48
    URI:https://strathprints.strath.ac.uk/id/eprint/80254
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