Spectroscopic investigations of the structure of highly ionised atoms have undergone
significant developments in recent years. The experimental progress is largely due to the …

Soft x-ray lasing with a gain length GL≈ 5.5 was demonstrated in hydrogenlike Li III at 13.5
nm (2-1 transition) in a 5 mm long LiF microcapillary using a 50 mJ, 250 fs UV laser beam at …

We have experimentally verified the performance predicted for a high-resolution
spectrometer employing a varied line-space plane reflection grating.[1] Figure 1 illustrates …

In present and future magnetic confined fusion devices with metallic plasma-facing
components (PFCs) such as JET-ILW and ITER, the calculation of the plasma composition …

We have measured extreme ultraviolet (EUV) spectra from highly charged tungsten ions in
low-density and high-temperature plasmas produced in the Large Helical Device at the …

The dynamics and stability of collapsing gas columns, generated by a fast capillary
discharge setup, are studied for obtaining soft x-ray amplification in highly ionized ions …

The method of tracer-encapsulated solid pellet (TESPEL) is now flourishing in various fields.
The original purpose to study impurity transport without giving substantial perturbation on …

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 …

AR= 44.3 m grazing-incidence grating spectrometer has been implemented on the
Livermore electron beam ion traps for high-resolution measurements in the soft x-ray and …

Bright narrow band emission observed in optically thin plasmas of high-Z elements in the
extreme ultraviolet spectral region follows a quasi-Moseley's law. The peak wavelength can …