Research on the triggering process of a laser-triggered vacuum switch

The laser-triggered vacuum switch (LTVS) is a type of high-voltage closing switch with broad application prospects in pulsed-power technology. Research into the triggering process of the LTVS is not only helpful to understand the triggering mechanism of the LTVS but also beneficial to the optimizati...

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Main Authors: Zhenghao He, Yuchen Liu, Yinan Xin
Format: Article
Language:English
Published: AIP Publishing LLC 2021-11-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0057541
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author Zhenghao He
Yuchen Liu
Yinan Xin
author_facet Zhenghao He
Yuchen Liu
Yinan Xin
author_sort Zhenghao He
collection DOAJ
description The laser-triggered vacuum switch (LTVS) is a type of high-voltage closing switch with broad application prospects in pulsed-power technology. Research into the triggering process of the LTVS is not only helpful to understand the triggering mechanism of the LTVS but also beneficial to the optimization of the LTVS. In this paper, the triggering process and the delay time of a LTVS with a Ti–KCl mixture target was analyzed theoretically. A numerical simulation was performed to describe the laser-target ablation process and the expansion dynamics of the initial plasma. The simulation results were compared with the experimental results. It is clear that the triggering process and delay time strongly depend on the laser intensity. As the laser intensity rises, the velocity of initial plasma increases, resulting in a shorter delay time of the LTVS. Increasing the gap voltage can also shorten the delay time.
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spelling doaj.art-993be2d3fea3450b8ddf010806abb9652022-12-21T23:00:25ZengAIP Publishing LLCAIP Advances2158-32262021-11-011111115113115113-710.1063/5.0057541Research on the triggering process of a laser-triggered vacuum switchZhenghao He0Yuchen Liu1Yinan Xin2State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Key Laboratory of Pulsed Power Technology, Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei 430074, ChinaState Key Laboratory of Advanced Electromagnetic Engineering and Technology, Key Laboratory of Pulsed Power Technology, Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei 430074, ChinaChina Ship Development and Design Center, Wuhan, Hubei 430074, ChinaThe laser-triggered vacuum switch (LTVS) is a type of high-voltage closing switch with broad application prospects in pulsed-power technology. Research into the triggering process of the LTVS is not only helpful to understand the triggering mechanism of the LTVS but also beneficial to the optimization of the LTVS. In this paper, the triggering process and the delay time of a LTVS with a Ti–KCl mixture target was analyzed theoretically. A numerical simulation was performed to describe the laser-target ablation process and the expansion dynamics of the initial plasma. The simulation results were compared with the experimental results. It is clear that the triggering process and delay time strongly depend on the laser intensity. As the laser intensity rises, the velocity of initial plasma increases, resulting in a shorter delay time of the LTVS. Increasing the gap voltage can also shorten the delay time.http://dx.doi.org/10.1063/5.0057541
spellingShingle Zhenghao He
Yuchen Liu
Yinan Xin
Research on the triggering process of a laser-triggered vacuum switch
AIP Advances
title Research on the triggering process of a laser-triggered vacuum switch
title_full Research on the triggering process of a laser-triggered vacuum switch
title_fullStr Research on the triggering process of a laser-triggered vacuum switch
title_full_unstemmed Research on the triggering process of a laser-triggered vacuum switch
title_short Research on the triggering process of a laser-triggered vacuum switch
title_sort research on the triggering process of a laser triggered vacuum switch
url http://dx.doi.org/10.1063/5.0057541
work_keys_str_mv AT zhenghaohe researchonthetriggeringprocessofalasertriggeredvacuumswitch
AT yuchenliu researchonthetriggeringprocessofalasertriggeredvacuumswitch
AT yinanxin researchonthetriggeringprocessofalasertriggeredvacuumswitch