Stimulated Brillouin scattering of whistler waves in low-density collisionless plasmas

1986 ◽  
Vol 36 (3) ◽  
pp. 371-377
Author(s):  
S. Guha ◽  
C. Basu
Keyword(s):  
Growth Rate ◽  
Ponderomotive Force ◽  
Brillouin Scattering ◽  
Negative Ions ◽  
Stimulated Brillouin Scattering ◽  
Low Density ◽  
Whistler Waves ◽  
Ionospheric Modification ◽  
Collisionless Plasmas ◽  
Stimulated Brillouin

We present a theoretical investigation of stimulated Brillouin scattering (SBS) of whistler waves in low-density collisionless plasmas in the presence of negative ions and incorporating the effect of the ponderomotive force on electrons. It is found that the growth rate of the excited ion quasi-mode decreases with increasing concentration of negative ions. The effect of negative ions on the SBS of the whistler waves during the ionospheric modification is discussed.

Stimulated Brillouin scattering of an electromagnetic wave in a magnetoactive dissipative multi-ion-species plasma

1995 ◽  
Vol 53 (2) ◽  
pp. 127-133 ◽  
Author(s):  
M. Bose
Keyword(s):  
Growth Rate ◽  
Electromagnetic Wave ◽  
Acoustic Waves ◽  
Brillouin Scattering ◽  
Negative Ions ◽  
Stimulated Brillouin Scattering ◽  
Magnetized Plasma ◽  
Ion Acoustic Waves ◽  
Stimulated Brillouin ◽  
Ion Species

Stimulated Brillouin scattering of an electromagnetic wave is investigated analytically in a dissipative magnetized plasma in the presence of negative ions. With an increase in the number of negative ions (maintaining quasi-neutrality), it is found that the growth rate of ion-acoustic waves decreases very slowly up to 50% concentration (i.e. half of the total ionic contribution) of negative ions. Further increase in the number density of negative ions beyond 50% results in a sharp fall in growth rate.

Stimulated Brillouin scattering of an Alfvén wave in low-density plasmas

1986 ◽  
Vol 36 (2) ◽  
pp. 189-193 ◽  
Author(s):  
K. M. Jain ◽  
Mridul Bose ◽  
S. Guha ◽  
D. P. Tewari
Keyword(s):  
Brillouin Scattering ◽  
Negative Ions ◽  
Stimulated Brillouin Scattering ◽  
Alfven Waves ◽  
Alfven Wave ◽  
Alfvén Waves ◽  
Low Density ◽  
Stimulated Brillouin

The stimulated Brillouin scattering of Alfvén waves is studied in low-density plasmas. It is shown that ion-sound oscillations may be excited by this mechanism under suitable ionospheric conditions and that the presence of negative ions reduces the probability of such excitations.

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