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

The EUV spectrum of $\ion {Fe}{viii} $ is reviewed, using new solar observations from the
Hinode EUV Imaging Spectrometer (EIS), together with older solar and laboratory data. The …

New spectrograms of multiply ionized iron have been recorded and analyzed, targeting the
Fe vii spectrum. As a result, several previously unknown spectral lines and energy levels …

A survey is given of the numerous forbidden lines that have recently been discovered in the
spectra of tokamak plasmas. They represent magnetic-dipole transitions in three different …

The spectrum of eight-times ionized iron, Fe ix, was studied in the 110–200 Å region. A low
inductance vacuum spark and a 3 m grazing incidence spectrograph were used for the …

ABSTRACT A detailed study of emission lines from Fe vii, Fe viii, and Fe ix observed by the
EUV Imaging Spectrometer on board the Hinode satellite is presented. Spectra in the ranges …

In this work, we report on a cold, bright portion of an active region observed by the
Hinode/EUV Imaging Spectrometer. The emitting plasma was very bright at transition region …

The emission spectrum of krypton (injected into TFR tokamak plasmas) has been recorded
photographically in the 15-300 Å spectral range by means of a 2 m grazing incidence …

The distorted wave extension of the autostructure code has been used to calculate energy
levels, radiative transition probabilities and collisional excitation rates of Fe viii and Fe ix up …

Transitions of the types 3s 2 3p k-3s3p k+ 1 and 3p k-3p k-1 3d are identified in spectra of
zirconium and molybdenum ions isoelectronic with KI to Mg I. These elements were …