Transient non-classical transport in the hollow cathode plume I: measurements of time-varying electron collision frequency

被引：14

作者：

Georgin, Marcel P. ^{[1
]}

Jorns, Benjamin A. ^{[2
]}

Gallimore, Alec D. ^{[2
]}

机构：

[1] Univ Michigan, Appl Phys Program, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2020年 / 29卷 / 10期

基金：

美国国家航空航天局;

关键词：

low-temperature plasma; plasma waves; plasma turbulence; hollow cathode; plasma propulsion; electric propulsion; ion acoustic turbulence; SCATTERING;

D O I：

10.1088/1361-6595/abb0ce

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Electrostatic probes are employed to measure the time-variations in electron collision frequency due to a large-scale, low-frequency, plasma instability in a high-current hollow cathode plasma discharge (plume mode oscillation). Time-resolved measurements of ion acoustic turbulence are used to infer the effective collision frequency on the timescale of this underlying wave. Through a direct comparison, it is shown that the observed variation in the electron collision frequency cannot be described by classical collisional processes, i.e. Coulomb and neutral collisions, but rather is well represented by the changes in the anomalous collision frequency due to the turbulence.

引用

页数：13

共 41 条

[1] [Anonymous], 2006, 42 AIAA ASME SAE ASE, DOI DOI 10.2514/6.2006-5151
[2] COLLISIONLESS INSTABILITY OF THE CATHODE SHEATH IN A HOLLOW-CATHODE DISCHARGE
ARBEL, D
BARLEV, Z
FELSTEINER, J
ROSENBERG, A
SLUTSKER, YZ
[J]. PHYSICAL REVIEW LETTERS, 1993, 71 (18) : 2919 - 2922
[3] Chen F.F., 2003, IEEE ICOPS M JEJ KOR
[4] Csiky G.A., 1969, MEASUREMENTS SOME PR
[5] Non-invasive time-resolved measurements of anomalous collision frequency in a Hall thruster
Dale, Ethan T.
Jorns, Benjamin A.
[J]. PHYSICS OF PLASMAS, 2019, 26 (01)
[6] Dan M, 2014, J PROPUL POWER, V30, P35
[7] ANOMALOUS TRANSPORT IN HIGH-TEMPERATURE PLASMAS WITH APPLICATIONS TO SOLENOIDAL FUSION SYSTEMS
DAVIDSON, RC
KRALL, NA
[J]. NUCLEAR FUSION, 1977, 17 (06) : 1313 - 1372
[8] Measurements of ion velocity and wave propagation in a hollow cathode plume
Dodson, Christopher
Jorns, Benjamin
Wirz, Richard
[J]. PLASMA SOURCES SCIENCE & TECHNOLOGY, 2019, 28 (06)
[9] Ion Heating Measurements on the Centerline of a High-Current Hollow Cathode Plume
Dodson, Christopher A.
Perez-Grande, Daniel
Jorns, Benjamin A.
Goebel, Dan M.
Wirz, Richard E.
[J]. JOURNAL OF PROPULSION AND POWER, 2018, 34 (05) : 1225 - 1234
[10] HIGH-CURRENT HOLLOW-CATHODE PHENOMENA
FRIEDLY, VJ
WILBUR, PJ
[J]. JOURNAL OF PROPULSION AND POWER, 1992, 8 (03) : 635 - 643

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