A newly developed flat-field extreme ultraviolet (EUV) spectrometer working at 10–130 Å
wavelength range with high spectral resolution and fast-time response has been developed …

Spectroscopy of radiation emitted by impurities and hydrogen isotopes plays an important
role in the study of magnetically confined fusion plasmas, both in determining the effects of …

It has been observed that with increasing toroidal rotation velocity inside the q= 1 layer in the
direction opposite to the plasma current, sawtooth activity becomes moderate and tungsten …

A 1 m normal incidence vacuum ultraviolet (VUV) spectrometer has been developed for
spatial distribution measurement of edge impurity line emission in the wavelength range of …

The emission spectra from Ne seeded divertor plasmas of JT-60U are measured by an
absolutely calibrated vacuum ultraviolet spectrometer and analyzed with a collisional …

We observe the vacuum ultraviolet spectra of highly charged tungsten ions in plasmas at
electron temperatures of 8 keV and 14 keV. The plasmas are produced by a tokamak JT …

The spectral lines of C2+ and C3+ emitted around the X-point in the detached plasma with
MARFE are measured with a VUV spectrometer and a two-dimensional visible spectrometer …

In H-mode plasmas with Ne, Ar and a mixture of Ne and Ar injection, the divertor radiation
power fractions amongst these impurities in addition to an intrinsic impurity, C, are …

A space-and time-resolved flat-field soft X-ray spectrometer with the wavelength range of 1–
13 nm has been developed to study impurity behavior on the Experimental Advanced …

Volume recombination of C 4+ and e− into C 3+ is observed for the first time in detached
divertor plasmas with an X-point MARFE. The recombination zone is located around the X …