STUDIES OF PRIMARY ELECTRON SOURCES

reportActive / Technical Report | Accession Number: AD0273875 | Open PDF

Abstract:

An experimental system for studying the controlled activation and deactivation of alkaline-earth metal oxide cathodes is described. The activation rate can be controlled by the addition or removal of carbon as a reducing agent, while the cathode is independently exposed to a deactivating gas. Results of studies of long-pulse and dc emission changes from oxide-cathodes are presented, and the measurement system is described. Photoelectric measurements on a BaO coated cathode in conjunction with thermionic pulse emission measurements are described. The data obtained indicate a relationship between the thermionic and photoelectric emission. Experiments investigating the enhancement of thermionic emission by ultraviolet light are reported. The procedure used to produce BaO thin films on the standard cathode base structure is outlined and photoelectric yield curves are presented. A study of electron tunneling through thin insulating films was initiated. Methods for preparing experimental samples suitable for the measurements were developed.

Author(s):
Anderson, D. E.
Author Organization(s):
MINNESOTA UNIV MINNEAPOLIS ELECTRON TUBE RESEARCH LAB
Descriptive Note:
Scientific rept. no. 1, 1 Mar-1 Jun 1961
Supplementary Note:
DOI: 10.21236/AD0273875
Pagination:
0059

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFCRL-62-72
Contract/Grant Number(s):
AF 19(604)-8381
Monitor Series:
62-72, ERD-CRRC
 Subject Terms
Joint Capability Areas:
JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_3.2_Engagement; JCA_3_Force Application; JCA_1_Force Support; JCA_3.2.1_Kinetic Means; JCA_6.4.1_Secure Information Exchange; JCA_1.2.7_Experimentation; JCA_1.2_Force Preparation; JCA_6_Net Centric; JCA_1.2.3_Educating; JCA_1.3_Human Capital Management; JCA_5_Command and Control; JCA_6.4_Information Assurance; JCA_1.3.2_Personnel Management; JCA_3.2.2_Non-Kinetic Means
Modernization Areas:
Microelectronics; Space
Communities of Interest:
Advanced Electronics
Descriptor(s):
*CATHODES(ELECTRON TUBES), *OXIDE CATHODES, ULTRAVIOLET RADIATION, SEMICONDUCTORS, COATINGS, ELECTRONS, NONLINEAR SYSTEMS, OXIDES, ALUMINUM, BARIUM COMPOUNDS, THERMIONIC EMISSION, TANTALUM COMPOUNDS, THIN FILM STORAGE DEVICES, MEASUREMENT, ALUMINUM COMPOUNDS
Field(s)/Group(s):
Electrical and Electronic Equipment
Keyword(s):
THIN FILMS, THIN FILM ELECTRONICS
Report Date:
1962 Jan 01