Excitation of ion-acoustic wave by power-modulated electromagnetic wave in a weakly ionized plasma

1976 ◽  
Vol 19 (3) ◽  
pp. 483 ◽  
Author(s):  
T. Yamamoto
Keyword(s):  
Electromagnetic Wave ◽  
Acoustic Wave ◽  
Ion Acoustic Wave ◽  
Ion Acoustic ◽  
Weakly Ionized ◽  
Weakly Ionized Plasma

scholarly journals Determination of the electron temperature in the modified ionosphere over HAARP using the HF pumped Stimulated Brillouin Scatter (SBS) emission lines

2009 ◽  
Vol 27 (12) ◽  
pp. 4409-4427 ◽  
Author(s):  
P. A. Bernhardt ◽  
C. A. Selcher ◽  
R. H. Lehmberg ◽  
S. Rodriguez ◽  
J. Thomason ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Acoustic Wave ◽  
Electric Fields ◽  
Pump Wave ◽  
Scattered Wave ◽  
Matching Condition ◽  
Ion Acoustic Wave ◽  
Matching Conditions ◽  
Ion Acoustic ◽  
Stimulated Brillouin

Abstract. An ordinary mode electromagnetic wave can decay into an ion acoustic wave and a scattered electromagnetic wave by a process called stimulated Brillouin scatter (SBS). The first detection of this process during ionospheric modification with high power radio waves was reported by Norin et al. (2009) using the HAARP transmitter in Alaska. Subsequent experiments have provided additional verification of this process and quantitative interpretation of the scattered wave frequency offsets to yield measurements of the electron temperatures in the heated ionosphere. Using the SBS technique, electron temperatures between 3000 and 4000 K were measured over the HAARP facility. The matching conditions for decay of the high frequency pump wave show that in addition to the production of an ion-acoustic wave, an electrostatic ion cyclotron wave may also be produced by the generalized SBS processes. Based on the matching condition theory, the first profiles of the scattered wave amplitude are produced using the stimulated Brillouin scatter (SBS) matching conditions. These profiles are consistent with maximum ionospheric interactions at the upper-hybrid resonance height and at a region just below the plasma resonance altitude where the pump wave electric fields reach their maximum values.

Studies of ion-acoustic wave properties by pulsed CO2 laser scattering

1979 ◽  
Vol 22 (1) ◽  
pp. 110 ◽  
Author(s):  
R. L. Watterson ◽  
A. L. Peratt ◽  
H. Derfler
Keyword(s):  
Acoustic Wave ◽  
Co2 Laser ◽  
Laser Scattering ◽  
Ion Acoustic Wave ◽  
Ion Acoustic ◽  
Pulsed Co2 Laser ◽  
Wave Properties

Propagation of ion-acoustic wave in the presheath region of a plasma sheath system

2005 ◽  
Vol 73 (1) ◽  
pp. 87-97 ◽  
Author(s):  
U Deka ◽  
C B Dwivedi ◽  
H Ramachandran
Keyword(s):  
Acoustic Wave ◽  
Plasma Sheath ◽  
Ion Acoustic Wave ◽  
Ion Acoustic
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