A flat-field extreme ultraviolet (EUV) spectrometer working in the 20-500 Å wavelength range
with fast time response has been newly developed to measure line emissions from highly …

This paper examined the innovations of the spectrometers for the measurement of
consistency based parameters of the handheld Micro Electronic Mechanical System (MEMS) …

Extreme ultraviolet (EUV) spectra emitted from iron and copper ions in a range of 8–500 Å
and molybdenum ions in a range of 8–400 Å were measured in Experimental Advanced …

A space-resolved extreme ultraviolet (EUV) spectrometer working in 60–400 Å range has
been developed to observe impurity emission profiles in core and edge plasmas of Large …

A flat-field extreme ultraviolet (EUV) spectrometer with a nominal 2400 grooves/mm
aberration-corrected ruled grating has been developed to analyze the emission spectrum in …

We report the extension of hollow-core fibre pulse compression to longer wavelengths. High-
energy multi-cycle infrared pulses are generated via optical parametric amplification and …

The behavior of impurities in the Large Helical Device (LHD) is reviewed based on the
knowledge acquired since LHD experiments started in 1998. As a result, a consistent …

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 …

Abstract In the Large Helical Device (LHD) operated with a metallic (stainless steel) first wall,
it is found that the iron density, n Fe, at the plasma core is fairly low (n Fe⩽ 10 8 cm− 3) in …

A precise absolute intensity calibration of a flat-field space-resolved extreme ultraviolet
(EUV) spectrometer working in wavelength range of 60–400 Å is carried out using a new …