Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas

K. Fujii; K. Mizushiri; T. Nishioka; T. Shikama; A. Iwamae; M. Goto; S. Morita; S. Kado; K. Sawada; M. Hasuo

doi:10.1063/1.3356730

Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas

K. Fujii, K. Mizushiri, T. Nishioka, T. Shikama, A. Iwamae, M. Goto, S. Morita, S. Kado, K. Sawada, M. Hasuo

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9 Scopus citations

Abstract

We developed a spectrometer specialized for simultaneous observation of the hydrogen Balmer- α, Β, -γ lines and the Fulcher- α v′ = v″ =2 rovibronic transition band. The spectrometer was optimized for the light input coupled by nine optical fibers having 400 μm core diameters. The spectral resolutions were 0.02-0.03 nm for these wavelength ranges at the entrance slit width of 20 μm. The polarization resolved spectra of these emissions from the peripheral region of large helical device (LHD) plasmas were measured simultaneously and showed the polarization dependence coming from the magnetic field in the LHD plasma.

Original language	English
Article number	033106
Journal	Review of Scientific Instruments
Volume	81
Issue number	3
DOIs	https://doi.org/10.1063/1.3356730
State	Published - 2010
Externally published	Yes

Funding

This work was supported by the National Institute for Fusion Science (Grant No. NIFS08KOAP020).

Funders	Funder number
National Institute for Fusion Science	NIFS08KOAP020

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Fujii, K., Mizushiri, K., Nishioka, T., Shikama, T., Iwamae, A., Goto, M., Morita, S., Kado, S., Sawada, K., & Hasuo, M. (2010). Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas. Review of Scientific Instruments, 81(3), Article 033106. https://doi.org/10.1063/1.3356730

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abstract = "We developed a spectrometer specialized for simultaneous observation of the hydrogen Balmer- α, Β, -γ lines and the Fulcher- α v′ = v″ =2 rovibronic transition band. The spectrometer was optimized for the light input coupled by nine optical fibers having 400 μm core diameters. The spectral resolutions were 0.02-0.03 nm for these wavelength ranges at the entrance slit width of 20 μm. The polarization resolved spectra of these emissions from the peripheral region of large helical device (LHD) plasmas were measured simultaneously and showed the polarization dependence coming from the magnetic field in the LHD plasma.",

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language = "English",

volume = "81",

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T1 - Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas

AU - Fujii, K.

AU - Mizushiri, K.

AU - Nishioka, T.

AU - Shikama, T.

AU - Iwamae, A.

AU - Goto, M.

AU - Morita, S.

AU - Kado, S.

AU - Sawada, K.

AU - Hasuo, M.

PY - 2010

Y1 - 2010

N2 - We developed a spectrometer specialized for simultaneous observation of the hydrogen Balmer- α, Β, -γ lines and the Fulcher- α v′ = v″ =2 rovibronic transition band. The spectrometer was optimized for the light input coupled by nine optical fibers having 400 μm core diameters. The spectral resolutions were 0.02-0.03 nm for these wavelength ranges at the entrance slit width of 20 μm. The polarization resolved spectra of these emissions from the peripheral region of large helical device (LHD) plasmas were measured simultaneously and showed the polarization dependence coming from the magnetic field in the LHD plasma.

AB - We developed a spectrometer specialized for simultaneous observation of the hydrogen Balmer- α, Β, -γ lines and the Fulcher- α v′ = v″ =2 rovibronic transition band. The spectrometer was optimized for the light input coupled by nine optical fibers having 400 μm core diameters. The spectral resolutions were 0.02-0.03 nm for these wavelength ranges at the entrance slit width of 20 μm. The polarization resolved spectra of these emissions from the peripheral region of large helical device (LHD) plasmas were measured simultaneously and showed the polarization dependence coming from the magnetic field in the LHD plasma.

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JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 3

M1 - 033106

ER -

Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas

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