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Abstract  

Results of development of nuclear-physical research installations and methods of ocean bottom sediments analysis using radionuclide sources of neutron, gamma and X-ray radiations are presented. Practical applications of the above developments in expeditionary conditions aboard research vessels are summarized.

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Abstract  

The possibilities of multielement neutron activation analysis of the mineral raw materials of the Socialist Republic of Vietnam, have been studied. Samples were activated by a252Cf neutron source (yield 4·109 n·s–1). The induced activity was measured by coaxial Ge(Li) and planar Ge detectors. The content of gold, thorium, uranium, rare earths and other elements, was determined and evaluated in ores and concentrates by an absolute method.

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Journal of Radioanalytical and Nuclear Chemistry
Authors: N. Shilo, E. Ippolitov, V. Ivanenko, B. Kustov, V. Zheleznov, G. Aristov, A. Shtan, I. Ivanov, V. Kovalenko, and N. Kondrat’ev

Abstract  

A facility using a californium neutron source and a method for the neutron activation analysis of gold were developed. The sensitivity of the determination is 0.1 g/t. The sources of random and systematic errors have been studied. It has been concluded that in prospection and evaluation of gold ore deposits, the traditional test tube analysis for gold may be replaced with the developed method.

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