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

Volume

34

Issue

6

fYear

2006

Firstpage

2568

Lastpage

2571

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 V_imp, 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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2006.886069

Filename

4032903