Langmuir Probe Operating at Fixed Voltages
AssigneeLockheed Martin Corporation
InventorsAaron Michael Schinder, Frans Hendrik Ebersohn
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Abstract
In one embodiment, systems and methods include using a Langmuir probe to measure a plasma. The Langmuir probe comprises a housing, wherein the housing comprises an outer diameter and an inner diameter, wherein the inner diameter defines an internal cavity. The Langmuir probe further comprises a plurality of bodies, wherein the plurality of bodies is disposed at least partially within the inner cavity, wherein each of the plurality of bodies comprise a set of internal cavities. The Langmuir probe further comprises a plurality of double Langmuir probes disposed each set of the internal cavities.
Claims20
A Langmuir probe, comprising:
- a housing comprising an outer diameter and an inner diameter, wherein the inner diameter defines an internal cavity;
- a plurality of bodies disposed at least partially within the inner cavity, wherein each of the plurality of bodies comprises a set of internal cavities;
- and
- a plurality of double Langmuir probes disposed within each set of the internal cavities.
A non-transitory computer-readable medium comprising instructions that are configured, when executed by a processor, to:
- receive a first data point, a second data point, and a third data point;
- determine a current-voltage relationship based, at least in part, on the first data point, the second data point, and the third data point by extrapolating a curve to fit the first data point, the second data point, and the third data point based on a function;
- determine an ion saturation current based on a correction to the curve to accommodate ion sheath expansion;
- determine an electron temperature of a plasma;
- and
- determine an electron density of the plasma.
A system for measuring a plasma, comprising:
- a Langmuir probe, comprising:
- a housing comprising an outer diameter and an inner diameter, wherein the inner diameter defines an internal cavity;
- a plurality of bodies disposed at least partially within the inner cavity, wherein each of the plurality of bodies comprises a set of internal cavities;
- and
- a plurality of double Langmuir probes disposed within each set of the internal cavities;
- a data acquisition system coupled to the Langmuir probe;
- and
- an information handling system communicatively coupled to the data acquisition system.
Dependencies are inferred from the claim text.