A G Bailey 1964 Br. J. Appl. Phys. 15 1399 doi:10.1088/0508-3443/15/11/320
A G Bailey
Show affiliationsUsing an electrically driven shock tube as a plasma source, measurements of plasma conductivity have been made using two cold tungsten probes and a magnetohydrodynamic interaction. Complete load characteristics for the generator system were determined and from these conductivity values were estimated. The measurements in argon with a transverse magnetic field of 3100 gauss were as expected yielding conductivity values of the same order as the ionic conductivity predicted theoretically. In the cases of helium for applied magnetic fields of 3100 gauss, 5500 gauss and 7500 gauss, and argon for the two higher field values, the conductivity values for low values of probe current corresponded to the expected ionic conductivities. At a particular current there was an abrupt change of conductivity which for even greater currents remained constant and was of the same order as the theoretical estimates of electronic conductivity.
47.65.-d Magnetohydrodynamics and electrohydrodynamics
47.40.-x Compressible flows; shock and detonation phenomena
52.75.Fk Magnetohydrodynamic generators and thermionic convertors; plasma diodes
Issue 11 (November 1964)
Received 9 July 1964
A G Bailey 1964 Br. J. Appl. Phys. 15 1399
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