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It is proposed to use a great body of vacuum arc plasma parameters measured in combination with a theoretical model of a current-carrying plasma jet for the determination of cathodic microjet parameters. The most probable values of microspot diameter and microjet current thus obtained lie in the range and I = 1 - 5 A, respectively. It is also shown that the mean ion charge variations observed can be essentially explained by a periodical variation of the ionization energy set with the atomic number of the cathode material.
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Krinberg et al. (1996) studied this question.
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