2019年2月
Near-infrared Zeeman spectroscopy for the spatially resolved measurement of helium emission spectra in Heliotron J
PLASMA PHYSICS AND CONTROLLED FUSION
- 巻
- 61
- 号
- 2
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1088/1361-6587/aaebdf
- 出版者・発行元
- IOP PUBLISHING LTD
A passive spectroscopic method that can measure spatially resolved emission spectra only by observing from a single diagnostic port without assuming plasma symmetry was applied to the stellarator-heliotron device Heliotron J. The emission spectra from the inboard and outboard sides were separated using the difference in their Zeeman effects. On the basis of the fact that in a spectrum as a function of the wavelength, the magnitude of the wavelength splitting by the Zeeman effect relative to the Doppler broadening increases with the wavelength, the method was applied to a near-infrared helium emission line (He I 1s2s(3)S-1s2p(3)P, 1083 nm), and it was confirmed that the uncertainty in the separated spectra was reduced compared with that in the application to visible emission lines. From the emissivity of the separated spectra, the local recycling flux was evaluated using the inverse photon efficiency method.
- リンク情報
- ID情報
-
- DOI : 10.1088/1361-6587/aaebdf
- ISSN : 0741-3335
- eISSN : 1361-6587
- Web of Science ID : WOS:000451012300001