Laser-induced breakdown in organic liquid
Abstract
Using dimethyl silicone oil, typical dielectric liquid, the threshold fields of Nd-glass laser induced breakdown were experimentally studied as functions of mean molecular weight (or viscosity) and temperature. These were compared with the threshold fields of d.c. impulse breakdown. Laser induced photoconduction of silicone oil was also studied. The mechanism of electrical breakdown in liquids was discussed. The threshold fields of laser induced breakdown of silicone oil decreased with increasing mean molecular weight (viscosity), and increased a little with increasing temperature. On the other hand, the threshold fields of d.c. impulse breakdown slightly increased with increasing mean molecular weight, and decreased with increasing temperature. From these results, it is suggested that the microwave breakdown theory is applicable as the mechanism of laser induced breakdown in liquids.
- Publication:
-
Osaka University Technology Reports
- Pub Date:
- October 1976
- Bibcode:
- 1976OsUTR..26..461F
- Keywords:
-
- Breakdown;
- Laser Applications;
- Neodymium;
- Organic Liquids;
- Silicone Resins;
- Dielectrics;
- Electrodes;
- Photoconductivity;
- Rare Earth Elements;
- Viscosity;
- Lasers and Masers