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Cathode fall model and current-voltage characteristics of field emission driven direct current microplasmas
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10.1063/1.4829680
/content/aip/journal/pop/20/11/10.1063/1.4829680
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/11/10.1063/1.4829680
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A schematic of the one-dimensional field emission driven microplasma showing the relevant volume and surface processes along with the assumed electric field profile in the gap.

Image of FIG. 2.
FIG. 2.

Electron, ion, and total current density profiles obtained using PIC/MCC simulations for a 5 m field emission driven argon microplasma at a total current density of 4.7 × 105 A/m2. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 3.
FIG. 3.

Electron and ion number density profiles obtained using PIC/MCC simulations for a 5 m field emission driven argon microplasma. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 4.
FIG. 4.

Comparison of electric field and potential profiles predicted using the proposed model and PIC/MCC simulations for a 5 m field emission driven argon microplasma at a total current density of 4.7 × 105 A/m2. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 5.
FIG. 5.

Electron, ion, and total current density profiles obtained using PIC/MCC simulations for a 5 m field emission driven argon microplasma at a current density of 9 × 105 A/m2. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 6.
FIG. 6.

Electron and ion number density profiles obtained using PIC/MCC simulations for a 5 m field emission driven argon microplasma at a current density of 9 × 105 A/m2. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 7.
FIG. 7.

Comparison of electric field and potential profiles predicted using the proposed model and PIC/MCC simulations for a 5 m field emission driven argon microplasma at a current density of 9 × 105 A/m2. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 8.
FIG. 8.

Time history of the anode potential for various values of the total current density. Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 9.
FIG. 9.

Comparison of simulated ion number density, potential, and electric field profiles of argon microplasmas in three different gap sizes operating at a current density of 7 . Other operating parameters are  = 760 Torr, β = 55, , and .

Image of FIG. 10.
FIG. 10.

Comparison of current density vs voltage obtained using PIC/MCC simulations and the proposed model for various values of β for a 5 m field emission driven microplasma. Other operating parameters are  = 760 Torr, , and .

Image of FIG. 11.
FIG. 11.

Comparison of voltage and cathode fall thickness as a function of current density. Only post-breakdown characteristics are included. Other operating parameters are  = 760 Torr, gap < 10 m, , and .

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/content/aip/journal/pop/20/11/10.1063/1.4829680
2013-11-12
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Cathode fall model and current-voltage characteristics of field emission driven direct current microplasmas
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/11/10.1063/1.4829680
10.1063/1.4829680
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