Plasma and Fusion Research
Volume 13, 3402030 (2018)
Regular Articles
- 1)
- SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi-cho, Toki 509-5292, Japan
- 2)
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
- 3)
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
Abstract
In order to understand plasma transport in the edge stochastic layers, a visible spectrometer has been developed. Two-dimensional impurity emission intensity distributions in the edge stochastic layer of LHD, including divertor plate, divertor legs, X-point, and the last closed flux surface, have been measured. Carbon emission intensities and their distributions are found to be clearly different depending on the different magnetic field configuration and on the charge state. Effects of the edge magnetic field structure on these results are discussed.
Keywords
impurity emission, stochastic magnetic field, spectroscopy, divertor, two-dimensional measurement
Full Text
References
- [1] N. Ohyabu et al., Nucl. Fusion 34, 387 (1994).
- [2] M. Kobayashi et al., Nucl. Fusion 55, 104021 (2015).
- [3] M. Kobayashi et al., Nucl. Fusion 53, 093032 (2013).
- [4] H. Zhang, S. Morita et al., Phys. Plasmas 24, 022510 (2017).
- [5] M. Shoji et al., J. Nucl. Mater. 390-391, 490 (2009).
- [6] Y. Feng et al., Nucl. Fusion 48, 024012 (2008).