Nanosecond optical imaging spectroscopy of an electrothermal radiofrequency plasma thruster plume

Christine Charles; James Peter Dedrick; Rod Boswell; Deborah O'Connell; Timo Gans

doi:10.1063/1.4821738

Nanosecond optical imaging spectroscopy of an electrothermal radiofrequency plasma thruster plume

Christine Charles, James Peter Dedrick, Rod Boswell, Deborah O'Connell, Timo Gans

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Nanosecond optical imaging spectroscopy is employed to investigate the spatio-temporal dynamics of the plasma plume expanding from a 4.2 mm-diameter, 20 mm-long cylindrical capacitively coupled electrothermal radiofrequency (rf) driven thruster using 10 W of power at 12.50 MHz and an argon pressure of 1.5 Torr. On-axis, the plume exhibits four distinct peaks of optical emission intensity within the rf period. The plume has a spherical shape with a transient radial extension (during half of the rf cycle) at the thruster exit plane due to an rf current to ground when the grounded electrode acts as an anode.

Original language	English
Article number	124103
Number of pages	3
Journal	Applied Physics Letters
Volume	103
Issue number	12
DOIs	https://doi.org/10.1063/1.4821738
Publication status	Published - 16 Sept 2013

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10.1063/1.4821738

http://link.aip.org/link/doi/10.1063/1.4821738

Cite this

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title = "Nanosecond optical imaging spectroscopy of an electrothermal radiofrequency plasma thruster plume",

abstract = "Nanosecond optical imaging spectroscopy is employed to investigate the spatio-temporal dynamics of the plasma plume expanding from a 4.2 mm-diameter, 20 mm-long cylindrical capacitively coupled electrothermal radiofrequency (rf) driven thruster using 10 W of power at 12.50 MHz and an argon pressure of 1.5 Torr. On-axis, the plume exhibits four distinct peaks of optical emission intensity within the rf period. The plume has a spherical shape with a transient radial extension (during half of the rf cycle) at the thruster exit plane due to an rf current to ground when the grounded electrode acts as an anode.",

author = "Christine Charles and Dedrick, {James Peter} and Rod Boswell and Deborah O'Connell and Timo Gans",

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AU - Dedrick, James Peter

AU - Boswell, Rod

AU - O'Connell, Deborah

AU - Gans, Timo

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AB - Nanosecond optical imaging spectroscopy is employed to investigate the spatio-temporal dynamics of the plasma plume expanding from a 4.2 mm-diameter, 20 mm-long cylindrical capacitively coupled electrothermal radiofrequency (rf) driven thruster using 10 W of power at 12.50 MHz and an argon pressure of 1.5 Torr. On-axis, the plume exhibits four distinct peaks of optical emission intensity within the rf period. The plume has a spherical shape with a transient radial extension (during half of the rf cycle) at the thruster exit plane due to an rf current to ground when the grounded electrode acts as an anode.

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