USE OF $gamma$-SPECTROSCOPY FOR THE DETERMINATION OF BERYLLIUM, BORON, AND FLUORINE IN ORE BENEFICIATION PRODUCTS ON THE BASIS OF THE $gamma$-RADIATION ACCOMPANYING THE INTERACTION OF THE NUCLEI OF THESE ELEMENTS WITH $gamma$-RADIATION (in Russian)
Analytical determination of the elements occurring in ores by means of the ( alpha ,n) reaction suffers from the lack of selectivity, as the ores may contain several elements, e.g., Be, B, F, or Li, possessing high cross section tor this reaction. On the other hand, making use of the gamma , radiation of the ( alpha ,n) and the ( alpha ,p) reaction products with the nuclei of these elements, a satisfactory selectivity may be obtained in combination with gamma spectroscopy, for determining the Be, B, or F content of the ores. The Be/sup 9/ ( alpha ,n)C/sup 12/ reaction yieids an excited C/sup 12/ nucleus which emits hard 4.45and 7.65-Mev gamma quanta; the nuclear reaction products of alpha particles with F, B, or Li do not yield such high-energy gamma quanta. The F/ sup 19/( alpha ,n)Na and F/sup 19/( alpha ,p)Ne/sup 22/ reactions taking place upon irradiation of F by alpha particles emit 0.62, 1.24, and 1.5-Mev gamma quanta; similarly, B nuclei yield 2.3- and 3.8-Mev gamma quanta. A two to five microcurie Po/sup 210/ source was used together with a NaI(Tl) crystal as the detector for analysis of a beryl + CaF/sub 2/ mixture; the composition of the ore mixture was derived from the ratio of the counting rates of the characteristic gamma quanta. (TTT)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-001396
- OSTI ID:
- 4772355
- Journal Information:
- At. Energ. (USSR), Journal Name: At. Energ. (USSR) Vol. Vol: 13
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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