Fundamental Mechanisms of Nonequilibrium MFD Lasing Phenomena.
Interim rept. 1 Mar 74-28 Feb 75,
MASSACHUSETTS INST OF TECH CAMBRIDGE SPACE PROPULSION LAB
Pagination or Media Count:
The fundamental mechanisms and feasibility of MHD lasers are addressed in this program, which includes experimental studies of plasma properties by a pulsed technique which simulates the flow in the MHD laser by a temporal transient, and modeling analyses for performance evaluation. A wide range of gas mixtures, electric and magnetic fields, can be selected, and since the plasma is contained in a simple quartz chamber, diagnostics are easier than in a flow system. The utility of the pulsed simulation was clearly demonstrated in early experiments on nonequilibrium MHD plasmas. A key measurement is that of the plasma optical gain. It is done with a CW probe laser passing several 5 times through the 120 cm cabity, then falling on a single detector. The long path length allows measurement of gain within a few percent. The experiment is now producing data.
- Lasers and Masers
- Plasma Physics and Magnetohydrodynamics