Title :
Shock Wave Generation by Millimeter-wave Plasma using a High Power Gyrotron
Author :
Oda, Y. ; Komurasaki, K. ; Takahashi, K. ; Kasugai, A. ; Sakamoto, K.
Author_Institution :
Tokyo Univ., Chiba
Abstract :
A high power millimeter-wave beam generated by a 170 GHz gyrotron was injected into a cylindrical tube and atmospheric plasma was generated. The ionization front and a shock wave were propagated in the tube during the millimeter-wave pulse. From the pressure history measurement and plasma emission imaging in the tube, the propagation velocity of the shock wave was found identical to that of the ionization front. This indicates that isometric heating at the ionization front by millimeter-wave causes the efficient energy conversion from millimeter wave to fluid.
Keywords :
gyrotrons; millimetre wave tubes; plasma heating; plasma shock waves; atmospheric plasma; cylindrical tube; frequency 170 GHz; high power gyrotron; isometric heating; millimeter-wave plasma; millimeter-wave pulse; plasma emission imaging; shock wave generation; Gyrotrons; Ionization; Millimeter wave measurements; Millimeter wave propagation; Particle beam injection; Particle beams; Plasma measurements; Plasma waves; Power generation; Shock waves;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368383
