Volume and surface propellant heating in an electrothermal radio-frequency plasma micro-thruster
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Greig, A.; Charles, C.; Paulin, N.; Boswell, R. W.
Description
The temporal evolution of neutral gas temperature over the first 5 min of operation for an electrothermal radio-frequency micro-thruster with nitrogen (N2) propellant was measured using rovibrational band matching of the second positive N2 system. Three distinct periods of gas heating were identified with time constants of τ 1 = 8 × 10⁻⁵ s, τ 2 = 8 s, and τ 3 = 100 s. The fast heating (τ 1) is attributed to volumetric heating processes within the discharge driven by ion-neutral collisions. The...[Show more]
dc.contributor.author | Greig, A. | |
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dc.contributor.author | Charles, C. | |
dc.contributor.author | Paulin, N. | |
dc.contributor.author | Boswell, R. W. | |
dc.date.accessioned | 2015-10-27T00:58:34Z | |
dc.date.available | 2015-10-27T00:58:34Z | |
dc.identifier.issn | 0003-6951 | |
dc.identifier.uri | http://hdl.handle.net/1885/16112 | |
dc.description.abstract | The temporal evolution of neutral gas temperature over the first 5 min of operation for an electrothermal radio-frequency micro-thruster with nitrogen (N2) propellant was measured using rovibrational band matching of the second positive N2 system. Three distinct periods of gas heating were identified with time constants of τ 1 = 8 × 10⁻⁵ s, τ 2 = 8 s, and τ 3 = 100 s. The fast heating (τ 1) is attributed to volumetric heating processes within the discharge driven by ion-neutral collisions. The slow heating (τ 3) is from ion neutralization and vibrational de-excitation on the walls creating wall heating. The intermediate heating mechanism (τ 2) is yet to be fully identified although some theories are suggested. | |
dc.description.sponsorship | This research was partially funded by the Australian Space Research Program (APT project) and the Australian Research Council Discovery Project (No. DP140100571). | |
dc.publisher | American Institute of Physics (AIP) | |
dc.rights | http://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 27/10/15). Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.4892656 | |
dc.source | Applied Physics Letters | |
dc.title | Volume and surface propellant heating in an electrothermal radio-frequency plasma micro-thruster | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 105 | |
dc.date.issued | 2014-08-06 | |
local.identifier.absfor | 020204 | |
local.identifier.ariespublication | U3488905xPUB4424 | |
local.publisher.url | https://www.aip.org/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Greig, Amelia, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Plasma Research Laboratory, The Australian National University | |
local.contributor.affiliation | Charles, Christine, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Plasma Research Laboratory, The Australian National University | |
local.contributor.affiliation | Paulin, Nicolas, College of Physical and Mathematical Sciences, CPMS Research School of Astronomy and Astrophysics, RSAA General, The Australian National University | |
local.contributor.affiliation | Boswell, Roderick, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Plasma Research Laboratory, The Australian National University | |
dc.relation | http://purl.org/au-research/grants/arc/DP140100571 | |
local.bibliographicCitation.issue | 5 | |
local.bibliographicCitation.startpage | 054102 | |
local.bibliographicCitation.lastpage | 4 | |
local.identifier.doi | 10.1063/1.4892656 | |
dc.date.updated | 2015-12-11T08:56:55Z | |
local.identifier.scopusID | 2-s2.0-84905686675 | |
local.identifier.thomsonID | 000341153000108 | |
Collections | ANU Research Publications |
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