The possible role of certain carrier (Ga2O3,Na2CO3) on the intensity of spectral lines in various matrices such as graphite, U3O8, ZrO2, etc., was investigated. The resultsshow that, in any matrix there is a relationship between the carrier effect (logI/I0) and the ionization potential (V) of impurity elements. From the measurements of the arc temperature and degree of ionization, we believe that in the case of carrier distillation method the electric field must be considered. The addition of these carriers brings about a change of arc temperature as well as degree of ionization in the arc column, which leads to a more suitable condition for the excitation of many elements, resulting in an increase of the intensity of spectral lines, but it has no influence on the process of evaporation.
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