A high-current low-inductance vacuum spark was operated to produce hot micropinches in copper plasmas. In order to improve the reproducibility of the intense hard x-ray emission, different trigger modes and anode shapes were investigated. Based on the standard configuration used in many vacuum spark set-ups, the temporal jitter was reduced by a factor of eight while the spatial reproducibility of the plasma points was improved by a factor of three.
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Erber et al. (1996) studied this question.
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