Miniature radioactive light source and method of its manufacture

Details Miniature radioactive light source and method of its manufacture Miniature radioactive light source and method of its manufacture

1978-06-19

1980-07-15

Dixon, Harold A.

Radiant energy

Luminophor irradiation

Self-luminous article

250463, 250493, F21K 200

Patent

active

042130522

ABSTRACT:
A glass tube, laser sealed at its ends, has an elongated cross section, two wide side faces, and two narrow side faces. The tube contains a radioactive gas and a transducer, such as a phosphor compound, responsive to the gas. The narrow side faces of the tube are thicker than the wide side faces. Preferably, the wide side faces are outwardly bowed and the narrow side faces are semicylindrical to form an oval cross section. The ratio of the total glass thickness of the wide side faces to the spacing between the wide side faces is approximately 0.7.

REFERENCES:
patent: 1330180 (1920-02-01), Erdle
patent: 2300917 (1942-11-01), Gaskill
patent: 3368287 (1968-02-01), Ault
patent: 3409770 (1968-11-01), Clapham
patent: 3478209 (1969-11-01), Feuer
patent: 3706543 (1972-12-01), Thuler
patent: 3817733 (1974-06-01), Thuler
patent: 4044936 (1977-08-01), Obersby

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