Open AccessЭлектрофизические и тепловые параметры плазменной струи атмосферного давления в гелии при возбуждении синусоидальным и импульсным напряжением
Author(s) -
П.П. Гугин,
Д.Э. Закревский,
Е.В. Милахина
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.22.51726.18977
Subject(s) - limiting , plasma , atomic physics , jet (fluid) , atmospheric pressure plasma , excited state , current (fluid) , helium , pulse (music) , atmospheric pressure , excitation , pulse duration , voltage , materials science , physics , mechanics , optics , laser , meteorology , nuclear physics , engineering , thermodynamics , mechanical engineering , quantum mechanics
Comparative studies of generation of cold plasma jet of atmospheric pressure in helium when excited by sinusoidal voltage and unipolar positive pulses at 2-6 kV for medical applications have been conducted. It is shown that the achieved parameters are identical, but the absence of the effect of frequency self-organization of streamer breakdown leading to irregularity in streamer propagation under pulse excitation makes it preferable in biophysical experiments. A limiting factor for plasma jet exposure is the achievable target temperature, which can be reduced by limiting the duration of the current.