This article is cited in 1 paper

Spectroscopy and physics of atoms and molecules

Emission spectra of molecular gases CHF$_3$, CCl$_2$F$_2$, SF$_6$ in the range 3–20 nm under pulsed laser excitation using various gas jets as targets

V. E. Guseva^a, A. N. Nechai^b, A. A. Perekalov^b, N. N. Salashchenko^b, N. I. Chkhalo<sup>b

a</sup> National Research Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia
^b Institute for Physics of Microstructures, Russian Academy of Sciences, 603087 Nizhny Novgorod, Russia

Abstract: The article considers the results of studies of the emission spectra of CHF$_3$, CCl$_2$F$_2$, SF$_6$ upon excitation by pulsed laser radiation. We used Nd : YAG laser, $\lambda$ = 1064 nm, $\tau$ = 5 ns, and $E_{\text{pulse}}$ = 0.8 J. The spectral range of 3–20 nm was studied. We used capillary and supersonic conical nozzles with $d_{\mathrm{crit}}$ = 145 $\mu$m, 2$\alpha$ = 12$^\circ$, $L$ = 5 mm, and $d_{\mathrm{crit}}$ = 450 $\mu$m, 2$\alpha$ = 11$^\circ$, $L$ = 5 mm to form an atomic cluster beam. The emission spectra for various gas targets were obtained, the obtained spectra were deciphered, and the ions emitting in this spectral range were determined. We observed that with increasing particle concentration in the zone of laser spark, the radiation intensity increases. In this case, the intensity of ion lines with high degrees of ionization increases faster.

Keywords: cluster beams, extreme ultraviolet radiation, emission spectra, laser spark, x-ray spectrometer-monochromator.

Received: 28.09.2021
Revised: 21.10.2021
Accepted: 01.11.2021

DOI: 10.21883/OS.2022.02.51986.2771-21

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