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Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries. / Eliseev, S.; Timshina, M.; Samokhvalov, A.; Letunovskaya, M.; Smirnov, A.; Sergushichev, K.; Kalinin, N.; Belsky, D.; Burtsev, V.

In: Journal of Physics: Conference Series, Vol. 1400, No. 7, 077017, 11.12.2019.

Research output: Contribution to journalConference articlepeer-review

Harvard

Eliseev, S, Timshina, M, Samokhvalov, A, Letunovskaya, M, Smirnov, A, Sergushichev, K, Kalinin, N, Belsky, D & Burtsev, V 2019, 'Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries', Journal of Physics: Conference Series, vol. 1400, no. 7, 077017. https://doi.org/10.1088/1742-6596/1400/7/077017

APA

Eliseev, S., Timshina, M., Samokhvalov, A., Letunovskaya, M., Smirnov, A., Sergushichev, K., Kalinin, N., Belsky, D., & Burtsev, V. (2019). Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries. Journal of Physics: Conference Series, 1400(7), [077017]. https://doi.org/10.1088/1742-6596/1400/7/077017

Vancouver

Eliseev S, Timshina M, Samokhvalov A, Letunovskaya M, Smirnov A, Sergushichev K et al. Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries. Journal of Physics: Conference Series. 2019 Dec 11;1400(7). 077017. https://doi.org/10.1088/1742-6596/1400/7/077017

Author

Eliseev, S. ; Timshina, M. ; Samokhvalov, A. ; Letunovskaya, M. ; Smirnov, A. ; Sergushichev, K. ; Kalinin, N. ; Belsky, D. ; Burtsev, V. / Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries. In: Journal of Physics: Conference Series. 2019 ; Vol. 1400, No. 7.

BibTeX

@article{c19e3cdc4a7847a39e82e1649a18071b,
title = "Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries",
abstract = "Creating stable and efficient compact X-ray sources based on fast capillary discharges that do not incorporate preliminary ionization circuits poses additional restrictions on parameters of voltage pulses and capillary geometry. Applying a voltage pulse with a rise rate of the order of 1 kV/ns results in gradual breakdown of non-ionized gas in the capillary which takes the form of an ionization wave that initiates at the powered electrode and propagates with typical velocities of 1 cm/ns. After the wave reaches the grounded electrode, a plasma channel with gradually increasing conductivity is formed. The current onset therefore appears only after a certain time delay after beginning of the voltage pulse. The ratio between the delay and the applied voltage rise-time will eventually influence the current rise rate that defines plasma heating and compression. It is therefore necessary to have the ability to estimate this delay time for a given capillary geometry and understand its dependence on the properties of a voltage pulse. In this work numerical simulations of fast ionization waves created in an extended Al2O3 capillary filled with nitrogen at 2 Torr were performed for cases of voltage pulses of negative polarity with rise-times varying in the range 10-50 ns. The numerical model was based on fluid approach with drift-diffusion approximation for charged particle fluxes. Influence of voltage rise-time on initiation and propagation of a fast ionization wave as well as on consequent rate of current rise is investigated.",
author = "S. Eliseev and M. Timshina and A. Samokhvalov and M. Letunovskaya and A. Smirnov and K. Sergushichev and N. Kalinin and D. Belsky and V. Burtsev",
note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; International Conference PhysicA.SPb 2019 ; Conference date: 22-10-2019 Through 24-10-2019",
year = "2019",
month = dec,
day = "11",
doi = "10.1088/1742-6596/1400/7/077017",
language = "English",
volume = "1400",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "7",

}

RIS

TY - JOUR

T1 - Influence of voltage pulse rise-time on initiation and propagation of fast ionization waves in extended capillaries

AU - Eliseev, S.

AU - Timshina, M.

AU - Samokhvalov, A.

AU - Letunovskaya, M.

AU - Smirnov, A.

AU - Sergushichev, K.

AU - Kalinin, N.

AU - Belsky, D.

AU - Burtsev, V.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2019/12/11

Y1 - 2019/12/11

N2 - Creating stable and efficient compact X-ray sources based on fast capillary discharges that do not incorporate preliminary ionization circuits poses additional restrictions on parameters of voltage pulses and capillary geometry. Applying a voltage pulse with a rise rate of the order of 1 kV/ns results in gradual breakdown of non-ionized gas in the capillary which takes the form of an ionization wave that initiates at the powered electrode and propagates with typical velocities of 1 cm/ns. After the wave reaches the grounded electrode, a plasma channel with gradually increasing conductivity is formed. The current onset therefore appears only after a certain time delay after beginning of the voltage pulse. The ratio between the delay and the applied voltage rise-time will eventually influence the current rise rate that defines plasma heating and compression. It is therefore necessary to have the ability to estimate this delay time for a given capillary geometry and understand its dependence on the properties of a voltage pulse. In this work numerical simulations of fast ionization waves created in an extended Al2O3 capillary filled with nitrogen at 2 Torr were performed for cases of voltage pulses of negative polarity with rise-times varying in the range 10-50 ns. The numerical model was based on fluid approach with drift-diffusion approximation for charged particle fluxes. Influence of voltage rise-time on initiation and propagation of a fast ionization wave as well as on consequent rate of current rise is investigated.

AB - Creating stable and efficient compact X-ray sources based on fast capillary discharges that do not incorporate preliminary ionization circuits poses additional restrictions on parameters of voltage pulses and capillary geometry. Applying a voltage pulse with a rise rate of the order of 1 kV/ns results in gradual breakdown of non-ionized gas in the capillary which takes the form of an ionization wave that initiates at the powered electrode and propagates with typical velocities of 1 cm/ns. After the wave reaches the grounded electrode, a plasma channel with gradually increasing conductivity is formed. The current onset therefore appears only after a certain time delay after beginning of the voltage pulse. The ratio between the delay and the applied voltage rise-time will eventually influence the current rise rate that defines plasma heating and compression. It is therefore necessary to have the ability to estimate this delay time for a given capillary geometry and understand its dependence on the properties of a voltage pulse. In this work numerical simulations of fast ionization waves created in an extended Al2O3 capillary filled with nitrogen at 2 Torr were performed for cases of voltage pulses of negative polarity with rise-times varying in the range 10-50 ns. The numerical model was based on fluid approach with drift-diffusion approximation for charged particle fluxes. Influence of voltage rise-time on initiation and propagation of a fast ionization wave as well as on consequent rate of current rise is investigated.

UR - http://www.scopus.com/inward/record.url?scp=85077723402&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1400/7/077017

DO - 10.1088/1742-6596/1400/7/077017

M3 - Conference article

AN - SCOPUS:85077723402

VL - 1400

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 7

M1 - 077017

T2 - International Conference PhysicA.SPb 2019

Y2 - 22 October 2019 through 24 October 2019

ER -

ID: 87713720