Accession Number : AD0710734

Title :   INDUCTIVE MAGNETIC PROBE DIAGNOSTICS IN A PLASMA.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : McLaughlin,Terrence Adrien

Report Date : JUN 1970

Pagination or Media Count : 51

Abstract : Inductive magnetic probes were studied, designed, constructed, calibrated and used at the Plasma Study Facility. The probes were built for three specific purposes: to measure current, radial shock waves and Alfven waves in a fast Theta Pinch; to measure the parameters of shock fronts with short rise times produced by laser exploding of metal fibers; and to observe instabilities in a steady state plasma. Theta Pinch current measurements gave a current of 110 KAmps with the Theta Pinch operating with the capacitors charged to 13KV of 25KV maximum. The ringing frequency of the Theta Pinch was measured as 179 KHz. On calibration, the shock front probes showed a first resonance at 40 MHz which is comparable to probe characteristics found in recent literature. The instability probes gave information which agreed with previous descriptions of instabilities based on optical and Langmuir probe diagnostics. (Author)

Descriptors :   (*PROBES(ELECTROMAGNETIC), DESIGN), (*PLASMA MEDIUM, SHOCK WAVES), MAGNETIC PINCH, MAGNETOHYDRODYNAMICS, STABILITY, MEASUREMENT, THESES

Subject Categories : Test Facilities, Equipment and Methods
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE