On the Selectivity of Population of the Neon Excited Levels in the Decaying He–Ne Plasma
- Authors: Ivanov V.A.1, Skoblo Y.E.1
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Affiliations:
- St. Petersburg State University
- Issue: Vol 127, No 5 (2019)
- Pages: 820-824
- Section: Spectroscopy and Physics of Atoms and Molecules
- URL: https://journal-vniispk.ru/0030-400X/article/view/166144
- DOI: https://doi.org/10.1134/S0030400X19110110
- ID: 166144
Cite item
Abstract
The results of a spectroscopic study of the afterglow of a pulsed discharge in a He–Ne mixture are presented, showing the unique selective population of the upper level of the 2p54p configuration (3p1 in Paschen’s notation) of a neon atom at a helium pressure of tens of Torr. The main measurements were conducted under conditions of competition between the excitation transfer from metastable He atoms (21S0) and the dissociative recombination of HeNe+ ions with electrons as sources of excited atoms. Helium pressure PHe ≈ 0.08–20 Torr, neon PNe ≈ 0.0005–0.003 Torr, the electron density [e] < 1011 cm–3. The results of the experiment indicate the existence of a mechanism that forms with an increase of helium pressure such a distribution of populations over 2p54p levels, in which more than 60% of the radiation flux of 2p53s ← 2p54p transitions is concentrated in one spectral line of 352.0 nm.
About the authors
V. A. Ivanov
St. Petersburg State University
Author for correspondence.
Email: v.a.ivanov@spbu.ru
Russian Federation, St. Petersburg, 198504
Yu. E. Skoblo
St. Petersburg State University
Email: v.a.ivanov@spbu.ru
Russian Federation, St. Petersburg, 198504
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