US 11,933,282 B2
Inductive plasma acceleration apparatus and method
Xiaokang Li, Hunan (CN); Mousen Cheng, Hunan (CN); Jianjun Wu, Hunan (CN); Bixuan Che, Hunan (CN); Moge Wang, Hunan (CN); Dawei Guo, Hunan (CN); and Xiong Yang, Hunan (CN)
Assigned to NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY, Hunan (CN)
Appl. No. 17/605,565
Filed by NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY, Hunan (CN)
PCT Filed Sep. 25, 2020, PCT No. PCT/CN2020/117682
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2021/057892, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 201910911408.7 (CN), filed on Sep. 25, 2019.
Prior Publication US 2022/0205438 A1, Jun. 30, 2022
Int. Cl. F03H 1/00 (2006.01)
CPC F03H 1/0081 (2013.01) [F03H 1/0006 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An inductive plasma acceleration apparatus, comprising a pulsed laser assembly, a pulsed discharge assembly, an exciting coil assembly, a solid-state working medium, a control assembly, and a bracket,
wherein the exciting coil assembly is electrically connected to the pulsed discharge assembly, such that the pulsed discharge assembly produces a strong pulse current in the exciting coil assembly during a discharge process to further excite an inductive pulse electromagnetic field around the exciting coil assembly;
the solid-state working medium is located on an optical path of a laser pulse emitted by the pulsed laser assembly, such that the solid-state working medium produces a gas pulse under an ablation action of the laser pulse, and the inductive pulse electromagnetic field is located on a circulation gas path of the gas pulse, such that the gas pulse is capable of entering the inductive pulse electromagnetic field;
and the pulsed laser assembly and the pulsed discharge assembly are both electrically connected to the control assembly to control a power and a frequency of the laser pulse emitted by the pulsed laser assembly, wherein a reflecting assembly capable of changing a direction of the optical path is disposed on the optical path of the laser pulse emitted by the pulsed laser assembly, such that the laser pulse is capable of accurately irradiating on the solid-state working medium based on a predetermined density distribution, wherein the reflecting assembly comprises a first reflecting mirror and a second reflecting mirror which are disposed on the bracket, the first reflecting mirror has an axisymmetric conical configuration, and the second reflecting mirror has an axisymmetric annular configuration;
the first reflecting mirror is located within an annular opening of the second reflecting mirror, a reflecting sheet of the first reflecting mirror is located on a conical surface of the axisymmetric conical configuration, and a reflecting surface of the second reflecting mirror is located on an inner-ring surface of the axisymmetric annular configuration;
the solid-state working medium and the exciting coil assembly are both disposed on the bracket and located between the reflecting surface of the first reflecting mirror and the reflecting surface of the second reflecting mirror, and the exciting coil assembly is located below the solid-state working medium and excites the inductive pulse electromagnetic field above the solid-state working medium; and
the laser pulse emitted by the pulsed laser assembly irradiates on the solid-state working medium after reflecting from the reflecting surface of the first reflecting mirror and the reflecting surface of the second reflecting mirror.