Model of liquid-metal splashing in the cathode spot of a vacuum arc discharge

被引：43

作者：

Gashkov, M. A. ^{[1
]}

Zubarev, N. M. ^{[1
,2
]}

Zubareva, O. V. ^{[1
]}

Mesyats, G. A. ^{[1
,2
]}

Uimanov, I. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Ural Branch, Inst Electrophys, Ekaterinburg 620016, Russia

[2] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2016年 / 122卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

CURRENT-DENSITY; ELECTRIC-FIELD; MOLTEN-METAL; SINGLE DROP; SURFACE; IMPACT; MECHANISM; EROSION; FLUID;

D O I：

10.1134/S1063776116040051

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The formation of microjets is studied during the extrusion of a melted metal by the plasma pressure from craters formed on a cathode in a burning vacuum arc. An analytic model of liquid-metal splashing that includes two stages is proposed. At the first stage, the liquid motion has the axial symmetry and a liquid-metal wall surrounding the crater is formed. At the second stage, the axial symmetry is broken due to the development of the Plateau-Rayleigh instability in the upper part of the wall. The wall breakup process is shown to have a threshold. The minimal plasma pressure and the minimal electric current flowing through the crater required for obtaining the liquid-metal splashing regime are found. The basic spatial and temporal characteristics of the jet formation process are found using the analytic model.

引用

页码：776 / 786

页数：11

共 50 条

[1] Model of liquid-metal splashing in the cathode spot of a vacuum arc discharge
M. A. Gashkov
N. M. Zubarev
O. V. Zubareva
G. A. Mesyats
I. V. Uimanov
Journal of Experimental and Theoretical Physics, 2016, 122 : 776 - 786
[2] Model of the Formation of Liquid-Metal Jets in the Cathode Spot of a Vacuum Arc Discharge
Gashkov, Mikhail A.
Mesyats, Gennady A.
Zubarev, Nikolay M.
Zubareva, Olga V.
PROCEEDINGS OF THE 2018 28TH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM (ISDEIV 2018), VOL 1, 2018, : 337 - 340
[3] Criteria for the Formation of Liquid-Metal Jets in the Cathode Spot of a Vacuum Arc Discharge
Gashkov, Mikhail A.
Mesyats, Gennady A.
Zubarev, Nikolay M.
Zubareva, Olga V.
IEEE TRANSACTIONS ON PLASMA SCIENCE, 2019, 47 (08) : 3448 - 3455
[4] The mechanism of liquid metal jet formation in the cathode spot of vacuum arc discharge
M. A. Gashkov
N. M. Zubarev
G. A. Mesyats
I. V. Uimanov
Technical Physics Letters, 2016, 42 : 852 - 855
[5] The mechanism of liquid metal jet formation in the cathode spot of vacuum arc discharge
Gashkov, M. A.
Zubarev, N. M.
Mesyats, G. A.
Uimanov, I. V.
TECHNICAL PHYSICS LETTERS, 2016, 42 (08) : 852 - 855
[6] Splashing conditions for a liquid metal in vacuum arcs: Cyclic processes in a cathode spot
Gashkov, M. A.
Mesyats, G. A.
Zubarev, N. M.
XXXIII INTERNATIONAL CONFERENCE ON EQUATIONS OF STATE FOR MATTER, 2019, 1147
[7] Formation of liquid-metal jets in a vacuum arc cathode spot: Analogy with drop impact on a solid surface
Gashkov, M. A.
Zubarev, N. M.
XXXII INTERNATIONAL CONFERENCE ON INTERACTION OF INTENSE ENERGY FLUXES WITH MATTER (ELBRUS 2017), 2018, 946
[8] Numerical simulation of the liquid-metal jet formation and droplet pinch-off in the cathode spot of a vacuum arc
Uimanov, I. V.
Mesyats, G. A.
14TH INTERNATIONAL CONFERENCE GAS DISCHARGE PLASMAS AND THEIR APPLICATIONS, 2019, 1393
[9] Dynamics of Molten Metal Jet Formation in the Cathode Spot of Vacuum Arc Discharge
Gashkov, Mikhail A.
Mesyats, Gennady A.
Uimanov, Igor V.
Zubarev, Nikolay M.
PROCEEDINGS OF THE 2018 28TH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM (ISDEIV 2018), VOL 2, 2018, : 365 - 368
[10] Peculiarities of grid control over the current in a discharge with a cathode spot on the cesium liquid-metal cathode
V. B. Kaplan
A. M. Martsinovskii
I. I. Stolyarov
Technical Physics, 2011, 56 : 1579 - 1587

← 1 2 3 4 5 →