Accession Number:

AD0253988

Title:

RESEARCH INVESTIGATION OF CATHODE EMISSIVE MATERIALS

Descriptive Note:

Corporate Author:

FRANKLIN INST NEWARK DE BARTOL RESEARCH FOUNDATION

Personal Author(s):

Report Date:

1961-01-15

Pagination or Media Count:

1.0

Abstract:

The data relative to emission-vs-coverage of an 832 tungsten plane has been analyzed with respect to a ball model of this plane with W and the Th atoms in the proper size ratio. The emission-vscoverage curve is seen to consist of three distinguishable portions, each of which corresponds to progressive occupation of a different type of site. Certain difficulties in growing large single grains in tungsten ribbons were found to be characteristic of the particular batch of ribbon being used. An electronic regulator of the dc generator which supplies the heating current in the crystal growing process has been successfully completed it maintains a constant current while the heated length of ribbon increases. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE