Bulletin of the American Physical Society
75th Annual Gaseous Electronics Conference
Monday–Friday, October 3–7, 2022;
Sendai International Center, Sendai, Japan
The session times in this program are intended for Japan Standard Time zone in Tokyo, Japan (GMT+9)
Session FF3: Modeling - Thrusters and Wave-Plasma Interactions
1:30 PM–3:30 PM,
Friday, October 7, 2022
Sendai International Center Room: Shirakashi 1
Chair: Scott Doyle, University of Michigan
Abstract: FF3.00006 : PIC modeling of iodine plasma for electric propulsion conditions
3:00 PM–3:15 PM
Alejandro Alvarez Laguna
(Laboratoire de Physique des Plasmas, CNRS, E. Polytechnique)
LPP Propulsion Team, LCPMR
However Iodine plasma chemistry may impact performances in ways that may be difficult to predict. Electron collisions with I2 molecules introduce new energy losses and new charged species in the form of molecular and negative ions. Moreover, the cross sections of the reactions that occur in iodine plasmas are not as well benchmarked as in noble gases.
To simulate iodine plasma discharges we use a global model to first compute the expected average densities and temperatures of all species species. These parameters are given as inputs to a Particle In Cell Code with a Monte-Carlo Collision module including a detailed iodine chemistry . This method allows us to test our models and cross section sets against Langmuir probe and optical measurements conducted in low pressure iodine discharges performed in a prototype thruster at LPP.
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