Characteristics of SMBI fueling with laval nozzle in GAMMA 10 based on experimental and simulation results

Results of supersonic molecular bean injection (SMBI) with Laval nozzle has been carried out in the GAMMA 10 tandem mirror. The neutral transport during SMBI was investigated by the two-dimensional image of the light emission captured by the high-speed camera. We used the value of full width at half...

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Bibliographic Details
Main Authors: Islam, M. M., Nakashima, Y., Kobayashi, S., Nishino, N., Hosoi, K., Ichimura, K., Islam, M. S., Fukui, K., Shimizu, K., Ohuchi, M., Arai, M., Yokodo, T., Lee, G., Yoshikawa, M., Kohagura, J., Hirata, M., Ikezoe, R., Ichimura, M., Sakamoto, M., Imai, T.
Format: Conference Proceeding
Language:English
Subjects:
Computer simulation
Emission analysis
High speed cameras
Light emission
Monte Carlo simulation
Nozzles
Particle diffusion
Simulation
Transport
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Summary:Results of supersonic molecular bean injection (SMBI) with Laval nozzle has been carried out in the GAMMA 10 tandem mirror. The neutral transport during SMBI was investigated by the two-dimensional image of the light emission captured by the high-speed camera. We used the value of full width at half maximum (FWHM) of the distribution of emission intensity as an index of neutral transport. The FWHM value decreases with the increase of the plenum pressure which indicates that the particle diffusion was more convergent at high plenum pressure. Fully three-dimensional neutral transport simulation using a Monte-Carlo code DEGAS is applied to SMBI experiment and simulation results qualitatively explained the experimental results.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4964174