Investigations of a high current linear aperture radial multichannel pseudospark switch

Lamba, Ram Prakash; Pathania, Varun; Meena, B. S.; Rahaman, Habibur; Pal, Udit Narayan; Prakash, Ram

doi:10.1063/1.4932966

Cited by 39 publications

(8 citation statements)

References 21 publications

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“…This arrangement is designed to operate with extremely high pulsed current and is often used in switching devices [2,[38][39][40]. The devices, based on a similar electrode system, are often called cold cathode thyratrons, or thyratrons with grounded grid, or pseudospark switches [2,[38][39][40][51][52][53][54][55][56][57][58][59]. The latter term was proposed in [39,40].…”

Section: Typical Systems For Obtaining Low-pressure Dischargesmentioning

confidence: 99%

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Low-pressure discharges with hollow cathode and hollow anode and their applications

Korolev¹,

Koval²

2018

J. Phys. D: Appl. Phys.

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The review relates to low-pressure discharges with a hollow cathode and a hollow anode. The term ‘low pressure’ implies that a neutral particle density is extremely small and the electron free path for ionization is in excess of the characteristic size for the discharge gap. On the other hand, the neutral particles still play an essential role in forming the gas-discharge plasma. Thus, the discharge regimes keep an intermediate position between the classical low-pressure discharge with avalanche ionization and pure vacuum discharge that burns in the cathode metal vapor. New approaches to the interpretation of the discharge formation mechanism at the stage of delay time to breakdown, and for the discharge sustaining features at the later temporal stages, are discussed. The developed approaches offer the possibility of interpreting the discharge behavior in the systems to obtain a uniform plasma in a large volume of the cathode or anode cavity, in the sources of electron and ion beams based on the plasma cathode and in the high-current pseudospark switches.

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Section: Typical Systems For Obtaining Low-pressure Dischargesmentioning

confidence: 99%

“…As for the switching devices, the current density through the bore hole should not be very high. To reduce it, multihole switches are often constructed [38][39][40]56].…”

Section: High Current Stages Of the Glow Type Dischargementioning

confidence: 99%

Low-pressure discharges with hollow cathode and hollow anode and their applications

Korolev¹,

Koval²

2018

J. Phys. D: Appl. Phys.

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“…В настоящее время довольно широкое применение получили коммутирующие приборы на основе сильноточных импульсных газовых разрядов низкого давления с полым катодом (так называемые псевдоискровые разрядники) [1][2][3][4][5][6][7][8][9]. Конструкция разрядника и принцип работы в значительной степени напоминают конструкцию классического водородного тиратрона с накаленным катодом.…”

Section: Introductionunclassified

Особенности Работы Тиратрона С Холодным Катодом При Наличии Обратной Полуволны Напряжения

Королев¹,

Ландль²,

Гейман³

et al. 2017

Журнал Технической Физики

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Исследованы особенности работы металлокерамического тиратрона типа ТPI1-10k/50 в электрических цепях, включающих емкость, индуктивность и активное сопротивление при параметрах цепи, когда ток имеет колебательный характер. Эксперименты проведены при анодном напряжении до 30 kV, токе в прямом направлении до 7.6 kA и длительности первого полупериода тока от 0.38 µs до 1.9 µs. Получены данные по режимам работы, в которых тиратрон может коммутировать обратную волну тока и когда имеет место обрыв тока во втором полупериоде. Показано, что в процессе обрыва через тиратрон в обратном направлении протекает некоторый ток. Его величина и максимальное обратное напряжение на тиратроне определяют, будет ли происходить обрыв тока или повторный пробой прибора на обратном напряжении. При максимальном обратном токе на уровне нескольких сотен ампер полный обрыв тока происходит при обратных напряжениях вплоть до 12 kV. Обсуждены физические механизмы обрыва тока.

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“…The discharge is sustained between the ring anode A 1 and the cathode C 1 due to the power supply V 1 . Typically, this is a steady state hollow-cathode glow discharge with a current of (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) the current flows to the electrode C 1 . This current will be denoted as i 1 .…”

Section: Principle Of Thyratron Operation As Applied To the Propomentioning

confidence: 99%

“…Then the terms cold-cathode thyratron or grounded-grid thyratron are also used in the current literature. [4][5][6][7] In early [1][2][3][4][5] and present-day [6][7][8][9][10][11][12][13][14][15][16] publications, there are described a variety of switch prototypes for different applications on the basis of the demountable experimental chambers with external gas filling. As a result of the investigations, the sealed-off switches had been developed 5 in which the operating gas pressure is maintained due to a heated hydrogen reservoir.…”

Section: Introductionmentioning

confidence: 99%

Triggering of cold-cathode thyratron in electric circuit with grounded grid

et al. 2017

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Dependence of pre-breakdown time on ionization processes in a pseudospark discharge AIP Advances 7, 115005 (2017); https://doi.org/10.1063/1.5003242Development of high-power gas discharge and electronic vacuum devices for pulsed electrophysic. This paper deals with the investigations of the sealed-off hold-cathode thyratron (pseudospark switch) TPI1-10k/50, which is commercially produced by the Pulsed Technology Ltd., Ryazan, Russia. The trigger unit of the switch is based on a low-current auxiliary glow discharge. The new method for the switch triggering is proposed. The essence of the method is that the thyratron grid and the hollow cathode of the auxiliary discharge has to be grounded and the trigger pulse is applied to the ring anode of the trigger unit. In the proposed method, an undesirable high-voltage spike at the thyratron grid, which can appear with a usage of the other methods of triggering, is absent. It is shown that to trigger the thyratron a critical pulsed current to the main cathode cavity at a level of 0.8 A and higher should be provided. When the current exceeds the critical value, the jitter in the delay time to triggering falls in a range of 10 ns. This means that the method of triggering can be used in a variety of applications that require a low jitter in the delay time. © 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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Investigations of a high current linear aperture radial multichannel pseudospark switch

Cited by 39 publications

References 21 publications

Low-pressure discharges with hollow cathode and hollow anode and their applications

Low-pressure discharges with hollow cathode and hollow anode and their applications

Особенности Работы Тиратрона С Холодным Катодом При Наличии Обратной Полуволны Напряжения

Triggering of cold-cathode thyratron in electric circuit with grounded grid

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