Published March 1997
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Observation of dusts by laser scattering method in the JIPPT-IIU tokamak
Description
Laser scattering signals which indicate the presence of small dusts (diameter ≤ 2 μm) were occasionally observed in the JIPPT-IIU tokamak chamber. This phenomenon was reproduced by deliberately spreading carbon dusts from the top of the vacuum chamber. No noticeable effect on the plasma was observed for dust-fall of up to at least 106 dusts (10 μg) in 20 ms during discharge. Dusts fallen just before the plasma start-up seemed to be confined but soon be ejected in less than 30 ms. (author)
Availability note (English)
Available from INIS in electronic form and/or on microfiche .Files
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Additional details
Publishing Information
- Imprint Pagination
- 21 p.
- Report number
- NIFS--485
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 29015542
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- DUSTS; JIPPT-2 DEVICE; NEODYMIUM LASERS; PARTICLES; PLASMA; PLASMA DIAGNOSTICS; THOMSON SCATTERING
- Descriptors DEC
- AMPLIFIERS; CLOSED PLASMA DEVICES; EQUIPMENT; INELASTIC SCATTERING; LASERS; SCATTERING; SOLID STATE LASERS; STELLARATORS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES