Microwave diagnostics of a repetitive, short-pulse-sustained, weakly ionized, air plasma under the influence of a magnetic field

2006 ◽  
Vol 34 (3) ◽  
pp. 1004-1012 ◽  
Author(s):  
R.C. Murray ◽  
S.H. Zaidi ◽  
S.O. Macheret ◽  
R.B. Miles
Keyword(s):  
Magnetic Field ◽  
Short Pulse ◽  
Air Plasma ◽  
Microwave Diagnostics ◽  
Weakly Ionized ◽  
Ionized Air

scholarly journals Spatial and temporal distribution of metal atoms and their diatomic oxide molecules in femtosecond laser-induced plasmas

2018 ◽  
Vol 33 (11) ◽  
pp. 1875-1883 ◽  
Author(s):  
Yonghoon Lee ◽  
Xianglei Mao ◽  
George C.-Y. Chan ◽  
Jhanis Gonzalez ◽  
Richard E. Russo ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Focal Plane ◽  
Temporal Distribution ◽  
Nonlinear Phenomena ◽  
Spatial And Temporal Distribution ◽  
Air Plasma ◽  
Metal Atoms ◽  
Weakly Ionized ◽  
Ionized Air ◽  
P Distribution

Distribution of atoms and diatomic metal oxide molecules in femtosecond laser-induced plasmas generated at and after the laser beam focal plane, where nonlinear phenomena give rise to the formation of weakly ionized air plasma channels.

Boltzmann and Master Equations for MHD in Weakly Ionized Air Plasmas

2008 ◽  
Author(s):  
Gianpiero Colonna ◽  
mario Capitelli ◽  
Lucia Daniela Pietanza ◽  
Annarita Casavola
Keyword(s):  
Master Equations ◽  
Air Plasmas ◽  
Weakly Ionized ◽  
Ionized Air

EXPERIMENTAL INVESTIGATION OF LANGMUIR PROBES

1967 ◽  
Vol 45 (10) ◽  
pp. 3199-3209 ◽  
Author(s):  
R. M. Clements ◽  
H. M. Skarsgard
Keyword(s):  
Magnetic Field ◽  
Microwave Radiometer ◽  
Resonant Cavity ◽  
Boltzmann Distribution ◽  
Probable Error ◽  
Langmuir Probes ◽  
Noticeable Effect ◽  
Probe Field ◽  
Probe Radius ◽  
Weakly Ionized

Electron temperatures and densities measured in a weakly ionized helium afterglow with cylindrical double probes are compared with measurements obtained using a gated microwave radiometer and a microwave resonant cavity. The pressure was varied from 0.1 to 8.5 Torr. At low pressure, magnetic fields up to 0.11 T were applied. Independent of the values of the electron Larmor radii or particle mean free paths relative to the probe radius, the probes correctly measured the electron temperatures within an estimated random probable error of ±4% and a systematic error not exceeding ±4%. This demonstrates the validity, for the range of conditions studied, of a fundamental assumption of probe theory—that electrons in a retarding probe field are in a Maxwell–Boltzmann distribution at a temperature unaffected by the presence of the probe. Towards higher pressure the measurements show an increasing depression of the plasma density near the probe, associated with the diffusion to it. The applied magnetic field had no noticeable effect on the densities measured with the probes as compared with the cavity measurements.

Submilliwatt, short-pulse, terahertz radiation from femtosecond-laser irradiated InAs in a magnetic field

1998 ◽  
Author(s):  
N. Sarukura ◽  
H. Ohtake ◽  
S. Izumida ◽  
Zhenlin Liu ◽  
S. Ono ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Femtosecond Laser ◽  
Terahertz Radiation ◽  
Short Pulse
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