Switching delay of the cermet version of the MC2965

Technical Report · Wed Sep 01 04:00:00 EDT 1976

OSTI ID:7349310

Shope, L A; Heiser, M R

The cermet version of the MC2965 vacuum switch tube was tested in three different circuits to determine the dependency of the tube's switching delay and jitter on trigger current, anode voltage, and rate of rise of anode current. The results were then compared with two physical models of switch closure time - one dependent on the acceleration of metal vapor plasma and the second dependent on the formation time of multiple cathode spots. The closure time was found to be inversely dependent on the square root of the logarithm of trigger current, inversely dependent on the anode voltage, and directly dependent on the logarithm of the rate of rise of anode current. Switching time jitter was found to have similar dependencies. The tube design is judged to be acceptable for its application requirements in the MC3181/3185 neutron generators. There is good agreement of the experimental results with the physical models in part, and it is recommended that effort be made to ''marry'' the two to provide assistance in selection of materials and configurations of switch tube designs.

• Research Organization: Sandia Labs., Albuquerque, N.Mex. (USA)
• DOE Contract Number: E(29-1)-789
• OSTI ID: 7349310
• Report Number(s): SAND-76-0505
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
CERMETS
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRON TUBES
EQUIPMENT
MATHEMATICAL MODELS
NEUTRON SOURCES
PARTICLE SOURCES
PERFORMANCE TESTING
PHYSICAL PROPERTIES
RADIATION SOURCES
SWITCHES
TESTING