UDC 621.373.826
TEMPERATURE AND CONCENTRATION DISTRIBUTIONS OF NITROGEN MOLECULES OVER DISCHARGE CHANNEL CROSS-SECTION OF LOW-PRESSURE N2-LASER
B. A. Kozlov, Dr. in physics and mathematical sciences, full professor, Department of Industrial Electronics, RSREU, Ryazan, Russia;
orcid.org/0000-0001-5957-3688, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Z. V. Shvets, post-graduate student, RSREU, Ryazan, Russia;
orcid.org/0009-0006-7259-337X, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Temperature and nitrogen molecule concentration distributions across discharge channel in low pressure nitrogen laser with longitudinal discharge pumping in pulsed-periodic mode (F = 200 – 2000 Hz, pumping energy W = 0,5 J) were obtained using analytical methods. At maximum average pump power of P = 1 kW the temperature in the center of discharge channel reaches 3000 ˚C, and the concentration of nitrogen molecules in the center of discharge channel decreases by a factor of 1,4 compared to the concentration of molecules near the walls. This information is useful for understanding breakdown mechanism in pulsed-periodic mode and for establishing the relationship between distribution of laser power across the beam and the processes in discharge channel.
Key words: : low-pressure nitrogen laser, discharge channel, heat transfer, distribution of temperature and molecule concentration across the discharge channel, average pumping power.