Numerical investigation of dynamics and gas pressure effects in a nanosecond capillary sliding discharge

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Numerical investigation of dynamics and gas pressure effects in a nanosecond capillary sliding discharge. / Timshina, M.; Eliseev, S.; Kalinin, N.; Letunovskaya, M.; Burtsev, V.

In: Journal of Applied Physics, Vol. 125, No. 14, 143302, 14.04.2019.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{846efbd1f2bf4affa8c63ef13b6bc85a,

title = "Numerical investigation of dynamics and gas pressure effects in a nanosecond capillary sliding discharge",

abstract = "The paper presents the results of a numerical investigation of the dynamics of a sliding discharge in a capillary with spatial dimensions similar to those typically used in X-ray sources based on fast capillary discharges. The discharge is created in argon at pressure p = 9 Torr by applying a voltage pulse of negative polarity with an amplitude of 5 kV, a rise time of 5 ns, and a duration of 20 ns. Obtained distributions of main discharge parameters reproduce basic characteristics of a sliding discharge and reveal the mechanism of discharge propagation. The electric field in the front of the discharge is defined by a negative space charge, which at a given moment during discharge propagation is localized in a narrow region along the dielectric surface. For the considered case, discharge propagation is accompanied by full charging of the dielectric surface. The influence of gas pressure on discharge is investigated within range p = 2-25 Torr. Extrema in dependencies of total discharge time and front velocity on gas pressure are obtained in simulations and analyzed.",

author = "M. Timshina and S. Eliseev and N. Kalinin and M. Letunovskaya and V. Burtsev",

note = "Publisher Copyright: {\textcopyright} 2019 Author(s).",

year = "2019",

month = apr,

day = "14",

doi = "10.1063/1.5085758",

language = "English",

volume = "125",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "14",

}

RIS

TY - JOUR

T1 - Numerical investigation of dynamics and gas pressure effects in a nanosecond capillary sliding discharge

AU - Timshina, M.

AU - Eliseev, S.

AU - Kalinin, N.

AU - Letunovskaya, M.

AU - Burtsev, V.

PY - 2019/4/14

Y1 - 2019/4/14

N2 - The paper presents the results of a numerical investigation of the dynamics of a sliding discharge in a capillary with spatial dimensions similar to those typically used in X-ray sources based on fast capillary discharges. The discharge is created in argon at pressure p = 9 Torr by applying a voltage pulse of negative polarity with an amplitude of 5 kV, a rise time of 5 ns, and a duration of 20 ns. Obtained distributions of main discharge parameters reproduce basic characteristics of a sliding discharge and reveal the mechanism of discharge propagation. The electric field in the front of the discharge is defined by a negative space charge, which at a given moment during discharge propagation is localized in a narrow region along the dielectric surface. For the considered case, discharge propagation is accompanied by full charging of the dielectric surface. The influence of gas pressure on discharge is investigated within range p = 2-25 Torr. Extrema in dependencies of total discharge time and front velocity on gas pressure are obtained in simulations and analyzed.

AB - The paper presents the results of a numerical investigation of the dynamics of a sliding discharge in a capillary with spatial dimensions similar to those typically used in X-ray sources based on fast capillary discharges. The discharge is created in argon at pressure p = 9 Torr by applying a voltage pulse of negative polarity with an amplitude of 5 kV, a rise time of 5 ns, and a duration of 20 ns. Obtained distributions of main discharge parameters reproduce basic characteristics of a sliding discharge and reveal the mechanism of discharge propagation. The electric field in the front of the discharge is defined by a negative space charge, which at a given moment during discharge propagation is localized in a narrow region along the dielectric surface. For the considered case, discharge propagation is accompanied by full charging of the dielectric surface. The influence of gas pressure on discharge is investigated within range p = 2-25 Torr. Extrema in dependencies of total discharge time and front velocity on gas pressure are obtained in simulations and analyzed.

UR - http://www.scopus.com/inward/record.url?scp=85064394616&partnerID=8YFLogxK

U2 - 10.1063/1.5085758

DO - 10.1063/1.5085758

M3 - Article

VL - 125

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 14

M1 - 143302

ER -

ID: 78446923