Title :
Pulsed Discharge Plasmas in Supercritical Carbon Dioxide
Author :
Kiyan, T. ; Uemura, A. ; Tanaka, K. ; Zhang, C.H. ; Namihira, T. ; Sakugawa, T. ; Katsuki, S. ; Akiyama, H. ; Roy, B.C. ; Sasaki, M. ; Goto, M.
Author_Institution :
Grad. Sch. of Sci. & Technol., Kumamoto Univ., Kumamoto
Abstract :
In recent years, several studies about electrical discharge plasma in supercritical carbon dioxide (CO2) have been carried out. One of the unique characteristics of supercritical fluid is a large density fluctuation near the critical point that can result in marked dramatic changes of thermal conductivity. Therefore, the electrical discharge plasma produced in supercritical fluid has unique features and reactions unlike those of normal plasma produced in gas phase. In our experiments, two types of large volume plasma, namely the pulsed streamer discharge and the pulsed arc discharge have been generated in a supercritical CO2. It was found that the characteristic of the pulsed discharge plasma in supercritical CO2 depends on the change of the CO2 density near the critical region.
Keywords :
arcs (electric); plasma production; thermal conductivity; pulsed arc discharge; pulsed discharge plasmas; pulsed streamer discharge; supercritical carbon dioxide; supercritical fluid; thermal conductivity; Arc discharges; Carbon dioxide; Chemicals; Plasma chemistry; Plasma density; Plasma materials processing; Plasma properties; Plasma temperature; Pulse transformers; Thermal conductivity;
Conference_Titel :
Pulsed Power Conference, 2005 IEEE
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-9189-6
Electronic_ISBN :
0-7803-9190-x
DOI :
10.1109/PPC.2005.300449