Electric lamp and discharge devices – Geiger-mueller type
Patent
1982-04-01
1985-02-26
Demeo, Palmer
Electric lamp and discharge devices
Geiger-mueller type
250374, 445 28, H01J 4708
Patent
active
045019886
ABSTRACT:
A Geiger-Mueller ("GM") tube containing a noble gas mixture of about 98-99.9% Ne and the remainder Ar, and in addition containing from 2-5% ethylene as the quench gas, provides high stability and high count rates in the temperature range from about -100.degree. C. to about 200.degree. C. When this GM tube is provided with a sleeve-and-screen liner in electrical contact with an outer cathode, the tube exhibits exceptional sensitivity. The sleeve may be a continuous deposit of a heavy metal having an atomic number from about 73 to about 83, deposited on the inner surface of the cathode tube, or the sleeve may be a foil liner of tungsten or tantalum. The screen is woven of metal wire on which is deposited a heavy metal.
REFERENCES:
patent: 2197453 (1940-04-01), Hassler
patent: 2519864 (1950-08-01), Weisz
patent: 2552723 (1951-05-01), Koury
patent: 2606296 (1952-08-01), Simpson, Jr.
patent: 2715195 (1955-08-01), Friedman
patent: 3338653 (1967-08-01), Anton
Berner Victor G.
Mitrofanov Nicholas M.
Demeo Palmer
Harshaw/Filtrol Partnership
Lucas James A.
O'Shea Sandra L.
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