Accession Number : ADA019535

Title :   Combustion Dynamic Processes Associated with Advanced Lasing Systems: I. Kinetics and Structure of the CS2/O2 Flame Laser.

Descriptive Note : Interim scientific rept. 1 Apr 74-31 Mar 75,

Corporate Author : CALIFORNIA INST OF TECH PASADENA GUGGENHEIM JET PROPULSION CENTER

Personal Author(s) : Culick,F. E. C. ; Vetter,A. A.

Report Date : OCT 1975

Pagination or Media Count : 119

Abstract : This report is a study of the interactions of chemical kinetics, relaxation processes, and low-speed fluid mechanics for the deflagration of gaseous carbon disulfide and oxygen under conditions for which laser action has been demonstrated. A four-reaction branching chain reaction mechanism is deduced from experimental evidence and reaction rates to represent the chemical kinetics of CS2/O2 combustion. This chain mechanism is used to explain some explosion phenomena and to obtain the initial conditions and initial chemical kinetics expected for the different types of CS2/O2 chemical lasers. The dynamics of chemical population and relaxation, including selective depopulation, of the vibrational levels of CO are discussed. Three analytical methods are employed to solve the premixed laminar flame problem for the CS2/O2 flame. Details are given for the multi-slit injector whose design allows complete control over mixing. Results for this burner and premixed configuration burners are discussed. CO emission spectra were taken from CS2/O2 flames and the relative vibrational populations determined.

Descriptors :   *Chemical lasers, *Carbon disulfide, *Oxygen, Steady state, Reaction kinetics, Combustion, Relaxation, Fluid dynamics, Excitation, Chain reactions, Carbon monoxide, Activation energy, Chemiluminescence, Ionization potentials, Gas ionization, Concentration(Chemistry), Diffusion, Thermal conductivity, Flames, Gas dynamics

Subject Categories : Physical Chemistry
      Lasers and Masers
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE