ELECTROLUMINESCENE WITH A PERPETUAL RADIOACTIVE LAMP (in French)
Journal Article
·
· Rev. gen. mecan.
OSTI ID:4145355
When an electron beam strikes a fluorescent surface, the surface emits light. If a radioactive substance, which emits beta rays, and a fluorescent screen are enclosed within the same bulb, a lamp is obtained which does not require any outside energy and cannot be extinguished. The radioactive substance should be (1) gaseous so that in case of breakage the activity will disappear rapidly, (2) the beat source of beta radiation obtainable, and (3) it should have a sufficiently long bulb life. These conditions are best met by using H/sup 3/ and Kr/sup 85/, the latter having the additional advantage of being inert. Kr/ sup 85/ lamps, which are manufactured now on an industrial scale, can be seen at a distance of 200 m in complete darkness. They can be used as signal lights in salvage boats, for illuminating exit signs, and in cases where visibility should be maintained even after the interruption of all other sources of power supply. (OID)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-012671
- OSTI ID:
- 4145355
- Journal Information:
- Rev. gen. mecan., Journal Name: Rev. gen. mecan. Vol. Vol: 43, No. 118
- Country of Publication:
- Country unknown/Code not available
- Language:
- French
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