Thermionic current measurement in quartz

Details Thermionic current measurement in quartz Thermionic current measurement in quartz

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340..389j&link_type=abstract

In ESA, Frequency and Time Forum p 389-392 (SEE N93-24978 09-70)

Other

Electrical Measurement, Electromigration, Impurities, Ion Currents, Quartz Crystals, Thermionics, Characterization, Crystal Defects, Depolarization, Electric Fields, Thermoelectricity

Scientific paper

The characterization of quartz samples by a thermionic current measurement called Ionic Thermal Current (ITC) is reported. A better understanding of impurity migration, under applied electric field, would enable a more efficient control of the electromigration process used for quartz purification: 'sweeping'. Several blocks originating from the same zone were cut off in the same crystal. The laminas were cut in each of the blocks of perpendicular to the Z or Y axes. Two crystals were studied: one of the I quality (number 272) and the other of standard quality (number 511). The ITC measurements of these two types of crystal are presented. Thermionic currents of laminas cut off more or less further from the nucleus are compared. The effects of 'sweeping' on the ITC current is shown.

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