RESULTS IN PRODUCING CLOSED RADIATION SOURCES IN HUNGARY. PART I (in Hungarian)
ABS>Considerable effort was devoted to the development of the scientific foundation of a radioactive source industry in Hungary; these sealed BETA or gamma sources are widely applied in industry, especially for the fabrication of thickness gages used in the cardboard, plastics, rubber, and metal-foil industry. The Co/sup 60/ sources are prepared by irradiating a Co--Ni alloy, or sometimes even pure Co, in the Hungarian reactor. The activated metal is sealed in an epoxy resin and cured at 180 un. Concent 85% C. Zn/sup 65/ sources are somewhat less used because of their shorter half life and lower specific activity. The isotope is prepared by the irradiation of Zn/sup 64/ in a cyclotron or reactor; the activated metal is treated like the Co/sup 60/. The Cs/sup 137/, the gamma - radiation of which is due to the Ba/sup 137/ formed during its decay, is prepared by separating it from the flssion products of U; it is used in the fabrication of sealed sources in the form of its salts. Contamination of the external surfuce was noted with imported foreign sources, due to migration of the active material as a result of the corrosion of the container. This problem was avoided by preparing the source in the following manner: powdered, low-melting glass was impregnated with the Cs/sup 137/ solution, then the mixture was dried, melted, and encapsulated. An alternate method consisted in the impregnation of a porous ceramic rod. Ir/sup 192/ sources, prepared by the irradiation of Ir/sup 191/, were found useful because of the good chemical resistance of Ir. (TTT)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-023590
- OSTI ID:
- 4723435
- Journal Information:
- Energia Atomtech, Vol. Vol: 16; Other Information: Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- Country unknown/Code not available
- Language:
- Hungarian
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Related Subjects
BARIUM 137
BETA PARTICLES
CERAMICS
CESIUM 137
CHEMICAL REACTIONS
COBALT
COBALT 60
COBALT ALLOYS
CONTAMINATION
CORROSION
CYCLOTRONS
DECAY
FABRICATION
FISSION PRODUCTS
FOILS
GAGES
GAMMA SOURCES
GLASS
IMPREGNATION
IRIDIUM 191
IRIDIUM 192
IRRADIATION
METALS
NICKEL ALLOYS
PAPER
POLYMERS
POROSITY
RADIATION SOURCES
RESINS
RUBBER
SEALS
SEPARATION PROCESSES
SOLUTIONS
STABILITY
THICKNESS
URANIUM
VESSELS
ZINC 64
ZINC 65