Title :
Effect of Impurities on the Exclusive Parameters of Plasma-Focus Dena
Author :
Roshan, M.V. ; Babazadeh, A.R. ; Kiai, S. M Sadat
Author_Institution :
Nucl. Fusion Res. Center, Atomic Energy Organ. of Iran, Tehran
Abstract :
Fusion performance of a plasma-focus is negatively affected by the presence of impurities that originated from the countereffect of the current sheath and the electrodes, which lower the plasma temperature and dilute the reacting deuterons. The experimental results of the Filippov-type plasma-focus Dena (90 kJ, 25 kV, and 288 muF) demonstrate the profound influence of anode insert materials on the exclusive parameters of the device. The spike depth, the average of the second derivative of current Vimp, and the hot spots are the parameters that clearly display the effect of impurities on the pinch structure and consequently the radiations emitted from the compressed region
Keywords :
pinch effect; plasma X-ray sources; plasma focus; plasma impurities; plasma sheaths; plasma temperature; plasma transport processes; 25 kV; 288 muF; 90 kJ; Filippov-type plasma-focus Dena; anode insert materials; current sheath; deuterons; electrodes; hot spots; impurities; pinch structure; plasma temperature; Anodes; Electrodes; Impurities; Plasma devices; Plasma diagnostics; Plasma materials processing; Plasma properties; Plasma sheaths; Plasma temperature; Plasma transport processes; Impurities; neutron and X-ray emissions; pinch structure;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2006.886069
