Accession Number : AD0474195

Title :   THALLIUM BEAM TUBE RESEARCH.

Descriptive Note : Quarterly progress rept. no. 4, 1 May-31 Jul 65,

Corporate Author : VARIAN ASSOCIATES INC BEVERLY MA BEVERLY MICROWAVE DIV

Personal Author(s) : Lacey, Richard F.

Report Date : 31 JUL 1965

Pagination or Media Count : 13

Abstract : The goal of this contract is the construction of a laboratory model thallium beam tube for frequency control and timekeeping applications. It has been found possible to make an efficient, continuously operating oxidized tungsten ionizer that operates at a temperature where the dwell time of thallium on the ionizer surface is short enought to permit reasonable modulation frequencies. A low background pressure of oxygen is sufficient to keep the ionizer ribbon oxidized at these temperatures. A quadrupole state selector magnet was tested. (Author)

Descriptors :   (*ELECTRON TUBES, THALLIUM), BEAM POWER TUBES, FREQUENCY, CONTROL, TIMING DEVICES, IONIZATION, CAVITY RESONATORS, PHASE SHIFT CIRCUITS, TUNGSTEN, MAGNETS, IONS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE