Improved model for cathode spot crater in vacuum arc
Improved model for cathode spot crater in vacuum arc
复制标题
真空电弧阴极点弧坑的改进模型
DOI:
10.1088/1361-6463/aaeac0
复制
发表时间:
2018-11
期刊:
影响因子:
--
通讯作者:
Jia Shenli
中科院分区:
文献类型:
--
作者:
Zhang Xiao;Wang Lijun;Ma Jinwei;Wang Yuan;Jia Shenli
An improved two-dimensional axisymmetric swirl model based on former work has been developed to describe the detailed physical process in the formation and development of vacuum arc cathode spot. In the current model, the influence of plasma cloud, evaporation, backing ion, thermo-field (T-F) emission, back-diffused electron, self-generated magnetic field and Lorentz force are all considered. External parameters include electron temperature, near cathode voltage drop, average charge number, ion number density, space function and time function. The compositions of current density, energy flux density and external pressure are discussed and the influence of external parameters are studied. Simulation results show that electron current density from T-F emission is the most important component for current density; as for energy flux density and pressure, ion flux from plasma cloud is dominant. Ablation on a refractory metal is much less than that on a fusible metal under the same external conditions. The simulation results are in good agreement with other researchers’ results.
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DOI:
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发表时间:
2006
期刊:
--
影响因子:
--
作者:
M. Messaad;A. Belarbi;A. Lefort
通讯作者:
M. Messaad;A. Belarbi;A. Lefort
影响因子:
2.7
作者:
Gennadii A Mesyats;Sergei A Barengol'ts
通讯作者:
Gennadii A Mesyats;Sergei A Barengol'ts
DOI:
10.1109/deiv.2016.7748738
发表时间:
2016-09
期刊:
2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)
影响因子:
--
作者:
V. Frolova;A. Nikolaev;E. Oks;G. Yushkov
通讯作者:
V. Frolova;A. Nikolaev;E. Oks;G. Yushkov
DOI:
10.1109/deiv.2016.7748749
发表时间:
2016-09
期刊:
2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)
影响因子:
--
作者:
G. Mesyats;I. Uimanov
通讯作者:
G. Mesyats;I. Uimanov
DOI:
--
发表时间:
2002
期刊:
--
影响因子:
--
作者:
G. Mesyats;S. A. Barengol’ts
通讯作者:
G. Mesyats;S. A. Barengol’ts