## Ah&act-It is shown that the non-capacitive conduction current through dielectric liquids upon the application of a high alternating field of low audio frequency is space-charge limited. The capacitive current is very nearly all of fundamental frequency; the conduction current a harmonic current
Harmonic currents in dielectric media—II. The ionized complex
✍ Scribed by F. Gutmann
- Publisher
- Elsevier Science
- Year
- 1962
- Tongue
- English
- Weight
- 841 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The appearance of a characteristic harmonic spectrum in the dielectric current upon application of a high, sinusoidal, field is explained as due to the formation of ionized and/or excited complexes. The field causes the stabilization of short-lived ion clusters initially present, so that a net charge becomes distributed over a relatively large volume within the liquid, charge and energy being transported in the form of excitons. Calculations for the case of benzene under a voltage of 5500 V across a 1 mm gap gave the following data for the complex associated with the dominant fifth harmonic: radius 1.13 x 10-j cm, containing 4.2 x 10' molecules; average of 1.25 electronic charges per complex; mean free path 2.8 x 10-O cm; mobility 2.1 x lo-* cm"/V-set; energy 0.37 eV. Satisfactory agreement is obtained for a number of derived properties of the complex with values calculated by other means, or measured directly.
📜 SIMILAR VOLUMES
Further experimental work, with an improved apparatus, on purified benzene, n-hexane and cyclohexane is reported. The dielectric current at the fundamental frequency is nearly all capacitance current, but it is shown that the dielectric does not behave merely as a non-linear impedance, and must also