IONIZATION PROCESSES OF LASER-EXCITED SPECIES IN LOW-TEMPERATURE PLASMA AND ITS APPLICATIONстатья
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Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
Аннотация:The study of ion formation using excitation of atoms in flames by laser resonance radiation is discussed. The dependence of the opto galvanic (OG) signal in flame upon the laser shown the role of photo and collisional ionization mechanisms in the OG process. The contribution of the photoionisation to OG signal formation is significant. For K, Rb, and Cs the mecanism is purely photoionization, for Ca collisional ionization is prefer. These investigations resulted in high sensitive diagnostic and species determination in flames. Detection limits for some alcaline and alcaliearth metals have been calculated according to the 3s criterion and were equal at the level of much less than 1 ng/ml in liquid samples.