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 …

Injection of impurities in the form of sub-millimeter powder grains is performed for the first
time in the Large Helical Device (LHD) plasma, employing the Impurity Powder Dropper …

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 …

In order to study the radial transport of tungsten ions in long-pulse H-mode discharges, a
space-resolved spectrometer working at 30–520 Å has been newly developed to measure a …

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 in the extreme ultraviolet region is important to magnetic fusion research as
well as to astrophysics. We report on XEUS (X-ray and Extreme Ultraviolet Spectrometer) …

Two pairs of space-resolved extreme ultraviolet (EUV) spectrometers working at 5–138 Å
with different vertical observation ranges of− 7≤ Z≤ 19 and− 18≤ Z≤ 8 cm have been …

We report an extensive theoretical study of atomic data for Sr XXX in a wide range with L-
shell electron excitations to the M-shell. We have calculated energy levels, wave-function …

Scientists are increasingly relying on astronomical and remote sensing technologies to gain
deeper insights into the Earth and the universe. In these fields, the optical spectrum analyzer …