Carbon dioxide gasdynamic lasers utilizing gas mixtures containing carbon monoxide

Abstract

We present momentum images of the ionic products from the ionization of D 2 and C 2 H 2 by short laser pulses. For D 2 , we use a pump-probe approach to investigate the dependence of the enhanced ionization on the internuclear distance. Evidence for two (not well separated) regions of enhancement is found near internuclear distances of 6 and 10 au. In the case of acetylene, we report clear evidence for the production of both acetylene and vinylidene dications with kinetic energy releases similar to those reported earlier by core electron removal. We also find very different angular distributions for the fragments in the two channels, consistent with a finite time for the isomerization.

Calculation of the characteristics of a mixing CO2 gasdynamic laser with a nozzle unit of honeycomb construction

“…The use of the combustion products of various fuels, usually containing a number of admixtures besides nitrogen promoting the deactivation of the vibrationally excited molecules even before the interaction with the radiating gas, as the exciting gas requires great caution when using the assumption of "instantaneous mixing"to determine the GDL characteristics, especially from the aspect of their optimization. The model of "instantaneous mixing" was used in [2,3] with certain additional assumptions for high values of the ratio of flow rates of the radiating and donor gases in [4] Leningrad Mechanics Institute. and with the instantaneous introduction of losses in boundary layers and compression shocks in [I].…”