Accession Number : AD0745986

Title :   Research on MHD Lasers.

Descriptive Note : Annual technical progress rept. Jan-Aug 71,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE SPACE PROPULSION LAB

Personal Author(s) : Kerrebrock,Jack L.

Report Date : MAR 1972

Pagination or Media Count : 60

Abstract : A summary is presented of progress in a study of nonequilibrium generators, with emphasis on the vibrational excitation of molecular species. Experimental work on a large generator includes development of a coaxial preionizer and development of slanted electrode walls, both of which increase the power density of the generator. A pulsed analogue of an MHD laser has been constructed and operated providing data on the importance of CO2 dissociation in MHD lasers. A theoretical study of the interaction of electrothermal instabilities and the lasing radiation field has been made. It has been found that electrothermal instabilities grow faster in the presence of a lasing radiation field than without and that the electrothermal instabilities lead to extreme nonuniformity of the lasing radiation field. (Author)

Descriptors :   (*GAS LASERS, MAGNETOHYDRODYNAMICS), CARBON DIOXIDE, DISSOCIATION, GAS IONIZATION, GAS DISCHARGES, ATOMIC ENERGY LEVELS, ELECTRON TRANSITIONS

Subject Categories : Lasers and Masers
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE