This article is cited in 4 papers

The impossibility of recording emission lines of nitrogen ions in filament plasma

A. A. Il'in<sup>ab

a</sup> Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok
^b Far Eastern Federal University, Vladivostok

Abstract: It is shown that the emission lines of N II nitrogen ions cannot contribute to the emission of other lines and be observed in the emission spectrum of plasma filaments, which are generated by femtosecond laser pulses with a peak intensity of $\sim$50 TW/cm$^2$ in air. A simple procedure is described that allows evaluation of the ratio of the line intensities for the filamentation in air.

Received: 29.04.2016

 English version: Technical Physics Letters, 2016, 42:10, 1024–1026

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