Accession Number:

AD0620580

Title:

SPECTRAL EMISSIVITY AND ELECTRON EMISSION CONSTANTS OF THORIA CATHODES FORMED BY CATAPHORESIS,

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1947-08-12

Pagination or Media Count:

17.0

Abstract:

A method is described for forming thoria cathodes by electrochemical means, namely cataphoresis. In this method a thin layer of thoria is deposited over an underlying metal. A temperature scale is set up and the spectral emissivity is determined for this type of coating. Also, the electron emission constants were measured over a range of temperatures and it was found that these constants are different for d-c and pulsed emission. In addition, data are presented which set an upper limit to the resistivity of thoria as a function of temperature. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE