Measurement of erosion rate by absorption spectroscopy in a Hall thruster
Creators
- 1. Department of Aeronautics and Astronautics, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656 (Japan)
- 2. Department of Advanced Energy, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8562 (Japan)
- 3. Department of Advanced Energy Engineering Science, Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka 816-8580 (Japan)
Description
The erosion rate of a Hall thruster was estimated with the objective of building a real-time erosion rate monitoring system using a 1 kW class anode layer type Hall thruster. This system aids the understanding of the tradeoff between lifetime and performance. To estimate the flux of the sputtered wall material, the number density of the sputtered iron was measured by laser absorption spectroscopy using an absorption line from ground atomic iron at 371.9935 nm. An ultravioletAlxInyGa(1-x-y)N diode laser was used as the probe. The estimated number density of iron was 1.1x1016 m-3, which is reasonable when compared with that measured by duration erosion tests. The relation between estimated erosion rate and magnetic flux density also agreed with that measured by duration erosion tests
Additional details
Identifiers
- DOI
- 10.1063/1.2001630;
Publishing Information
- Journal Title
- Review of Scientific Instruments
- Journal Volume
- 76
- Journal Issue
- 8
- Journal Page Range
- p. 083111-083111.4
- ISSN
- 0034-6748
- CODEN
- RSINAK
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37035588
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- ABSORPTION; ABSORPTION SPECTROSCOPY; ANODES; DENSITY; EROSION; IONS; IRON; LASERS; LAYERS; LIFETIME; MAGNETIC FLUX; MONITORING; PLASMA; PLASMA DIAGNOSTICS; THRUSTERS
- Descriptors DEC
- CHARGED PARTICLES; ELECTRODES; ELEMENTS; METALS; PHYSICAL PROPERTIES; SORPTION; SPECTROSCOPY; TRANSITION ELEMENTS
Optional Information
- Notes
- (c) 2005 American Institute of Physics