Off Rowland spectrometer with shifted slit

The article presents the scheme of grazing incidence spectrometer with the entrance slit shifted from the Rowland circle. This scheme allows to get the focusing surface normal to the line of site and to use the micro channel plate detector for the registration of the spectra. The results of the experimental tests are also given

Off Rowland spectrometer with shifted slit

The article presents the scheme of grazing incidence spectrometer with the entrance slit shifted from the Rowland circle. This scheme allows to get the focusing surface normal to the line of site and to use the micro channel plate detector for the registration of the spectra. The results of the experimental tests are also given

Observation of ASE effect for Ne-like Ar in a capillary discharge driven by inductive storage with plasma erosion opening switch

Inductive storage with plasma erosion opening switch was used as a current driver for capillary discharge. A discharge current of 40-50 kA was reached with current time derivative higher than 1012 A/sec. At the moment 50 – 60 nsec from beginning of a discharge time gated "off-axis" VUV imaging of a plasma has shown an appearance of a bright spot corresponding to the position of a center of a far end of a capillary. Simultaneously an enhanced intensity of 469 A line of 3p-3s transition of Ar IX was detected. We consider these observations as a proof of an effect of amplified stimulated emission (ASE)

Analysis of the spectrum of the Pd I-like xenon (Xe IX) and extended interpretation of the Sb VI, Te VII and I VIII spectra

The spectrum of Xe IX has been observed using a fast capillary discharge with inductive storage as a light source and the normal incidence 6.65m spectrograph at Troitsk. This follows extended observations of vacuum spark spectra of Sb VI, Te VII and I VIII at Troitsk and at Meudon. Theoretical studies of [MATH] ([MATH]) configurations by means of the Cowan codes and by generalized-least-squares fits along the Pd I sequence lead to classify 82 lines as 5-5 transitions of Xe IX