Particle in cell simulation of a radiofrequency plasma jet expanding in vacuum
- Space Plasma, Power and Propulsion Laboratory, Research School of Physics and Engineering, The Australian National University, Canberra ACT 2601 (Australia)
The effect of a pressure gradient (∼133 Pa–0.133 Pa) on electron and ion energy distributions in a radiofrequency (rf at 13.56 MHz) argon plasma jet is studied using a 1D-3v Particle In Cell (PIC) simulation. The PIC domain is three times that of the 0.018 m long plasma cavity and the total simulation time is 1 ms. Ion heating and acceleration up to a drift velocity about 2000 m s{sup −1} are measured along the jet's main expansion axis. Elastic and charge exchange ion-neutral collisions histograms computed at equilibrium during 0.74 ms show that charge exchange collisions act as the main neutral heating mechanism.
- OSTI ID:
- 22412775
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 9 Vol. 106; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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