Langmuir probe diagnostics of fluctuation in a reflex arc nitrogen plasma.
Haycraft, Thomas James
MetadataShow full item record
A reflex arc nitrogen plasma in a longitudinal magnetic field has been investigated by means of cylindrical Langmuir probes. Magnetic fields varying from 2400 gauss to 6600 gauss were studied. A radial profile of electron temperature and space potential was obtained as an aid to understanding the inner and outer rotational fluctuations previously noted to be characteristic of the reflex arc column. The effect of crossed magnetic and electric fields resulting in an E x B particle drift has been proposed as the primary mechanism of the outer rotational fluctuation, while the inner rotation mechanism has been proposed to be the j x B force of the magnetohydrostatic equation of a plasma in equilibrium. Diagnostic measurements of a theta pinch device on the plasma column were not successful due to circuit pick-up of electric signals due to the theta pinch current pulse.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Andrews, Roger Charles (Monterey, California. Naval Postgraduate School, 1968-06);In conjunction with the production of large amplitude Alfven waves in a nitrogen plasma, diagnostic measurements utilizing a single Langmuir probe were made with the plasma facility operating in the reflex arc configuration. ...
Chen, Francis F.; Coopers, Alfred W. (Physical Review Letters, 1962-10-15);A continuous spectrum of low-frequency oscillations is found in many types of gas discharge which are maintained by a flow of current. Previous studies' of such oscillations in reflex discharges have shown that they ...
Clark, Jackie Lee. (1972-12);This paper is a report on experimental thesis work which investigated phase locking of a reflex klystron with a more stable microwave source. A discussion of the characteristics and components of a phase-locked loop and ...