MODE OF EVALUATION OF RADIO ECOLOGICAL CONTAMINATION OF ENVIRONMENT Russian patent published in 2005 - IPC

FIELD: the invention refers to monitoring of environment and may be used at revealing of the time of the maximum entering of radio nucleons into environment.

SUBSTANCE: according to declared mode selection of vegetable material, preparation samples out of it and analysis with the help of the method of fragmentation radiography of distribution in them of dividing radio nucleons through reflection on a detector Selection of sections of trees is carried out in investigated areas on one and the same altitude from the surface of the earth. Samples are prepared with smooth polished surface and marking of the time of formation of annual rings is performed from the moment of sawing of the tree. After exposure to the flow of thermal neutrons a count of tracks of each annular ring and etalon is carried out in the channel of a nuclear reactor. Curves of distribution of density of tracks from fragments of division of dividing radio nucleons according to years are plotted according to which one can judge about the quantity of entering of radio nucleons in definite periods of time.

EFFECT: possibility of carrying out a retrospective analysis of precipitation of radioactive waste materials.

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