Influence of the transient plasma dynamics on the scaling of the K-shell line emission in pinch plasmas
Abstract
The transient dynamics in pinch plasmas generated in a small plasma focus device has been made visible in the scaling of the brilliance of helium- and hydrogen-like resonance lines. The scaling of these lines was investigated theoretically and experimentally for different low Z - elements (nitrogen, oxy- gen, neon) considering the whole set of device parameter (current I(0),, neutral gas pressure p, anode radius a). Similarity considerations of the transient pinch plasma dynamics suggest that the set of determining parameters for the brilliance of the resonance lines can be reduced to I(0)2/(pa2) and pa for a fixed element, which is verified experimentally. Furthermore, the theoretical pre- dictions concerning the influence of the transient dynamics on the scaling of the brilliance of the transitions 1s-2p of hydrogen-like ions and ls2-1s2p of helium-like ions are verified experimentally.
