On the 90th anniversary of the Lebedev Physics Institute of the Russian Academy of Sciences (LPI)
X-ray and vacuum ultraviolet spectroscopy in LPI
E.N. Ragozin Moscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation
The last third of the 20th century was marked by the rapid development of X-ray and vacuum
ultraviolet (VUV) spectroscopy of multiply charged ions. This research commenced as studies of
X-ray solar radiation and radiation of multiply charged ions in laser-produced plasma.
Subsequently, they were supplemented by the study of fast electric discharges and work on X-
ray/VUV optics. The formulation of many works was also motivated by the need for
spectroscopic diagnostics of high-temperature plasma and the possibility of developing lasers in
the soft X-ray (SXR) range based on the transitions of multiply charged ions. The methods of
SXR/VUV spectroscopy have found application in the development of new X-ray optical
elements and schemes of diffraction spectrometers. The review reminisces the main participants
in these studies and the main milestones in the development of spectroscopic research at the LPI
in the vacuum region of the spectrum, starting from the mid-1960s, and briefly reflects the
development of the experimental technique used. The review does not claim to be complete, and
the selection of cited materials reflects the scientific interests of the author.
Keywords: vacuum spectroscopy, X-ray solar radiation, laser plasma, multiply charged ions, vacuum spectrometer, X-pinch, X-ray optics, multilayer mirror, VLS grating, X-ray projection lithography, X-ray prism spectrograph DOI:10.3367/UFNe.2023.07.039501 Citation: Ragozin E N "X-ray and vacuum ultraviolet spectroscopy in LPI" Phys. Usp., accepted
Received: 3rd, May 2023, revised: 3rd, July 2023, accepted: 3rd, July 2023