FIELD: instrumentation.
SUBSTANCE: mix of test gases is forced through test cell. Fluorescent radiation is excited therein by readjustable solid-state lasers with wavelengths corresponding to lines with maximum absorption by isotopes 129I and 127I and nitrogen dioxide. Concentration of said isotopes 129I and 127I and nitrogen dioxide are defined in analysed mix by formulae that allow for the composition of buffer gases.
EFFECT: higher sensitivity of determination.
2 cl, 2 dwg
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