RADIATION EFFECTS IN DIELECTRIC MATERIALS.
Quarterly rept. no. 2, 1 Dec 66-28 Feb 67,
GENERAL DYNAMICS SAN DIEGO CA GENERAL ATOMIC DIV
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Three substrate materials, Pyrex, fused quartz, and sapphire, with thin-film-evaporated electrodes were irradiated in vacuum and air with high-energy electrons from a linear accelerator at 10 to the 8th and 9th powers rads Cusec. The major portion of the induced signals in the Pyrex and quartz samples was due to secondary-electron emission. Induced conductance in each of these samples was similar in magnitude. Induced conductance in the sapphire substrate was about thirty times larger than that of the Pyrex or quartz samples and exhibited a short delay component. The observed secondary-emission signals were smaller, as expected, than the generally used value of 5 x 10 th the minus 13th power coulombrad-sq cm because of the sample geometry employed to minimize the effects of replacement current. Author
- Electrical and Electronic Equipment
- Nuclear Physics and Elementary Particle Physics