Effect of dust charge fluctuations on upper hybrid wave instabilities in magnetized dusty plasma

2014 ◽  
Vol 32 ◽  
pp. 1460350 ◽  
Author(s):  
Jyotsna Sharma ◽  
Ajay Gahlot ◽  
Suresh C. Sharma ◽  
V. K. Jain
Keyword(s):  
Growth Rate ◽  
Dusty Plasma ◽  
Unstable Wave ◽  
Lower Hybrid ◽  
Hybrid Wave ◽  
Charge Fluctuations ◽  
Electrostatic Wave ◽  
Dust Charge ◽  
Magnetized Dusty Plasma ◽  
Dust Charge Fluctuations

The decay instability of an upper hybrid electrostatic wave into an upper hybrid sideband wave and lower hybrid wave is studied in magnetized dusty plasma. A local theory of this process has been developed. The growth rate and mode frequencies of the unstable wave were evaluated based on existing dusty plasma parameters and it is found that the unstable mode frequency and growth rate increases with δ (ion-to-electron density ratio) in the presence and absence of dust charge fluctuations in addition to dust dynamics.

Dust-induced instability with dust charge fluctuations in a rotating dusty plasma

2020 ◽  
Vol 74 (6) ◽  
Author(s):  
Xiao-Song Yang ◽  
Bing Wang ◽  
Hui Chen ◽  
Xiao-Chang Chen ◽  
San-Qiu Liu
Keyword(s):  
Dusty Plasma ◽  
Charge Fluctuations ◽  
Dust Charge ◽  
Dust Charge Fluctuations

scholarly journals Excitation of lower hybrid wave by an ion beam in magnetized plasma

2013 ◽  
Vol 31 (4) ◽  
pp. 747-752 ◽  
Author(s):  
Ved Prakash ◽  
Ruby Gupta ◽  
Suresh C. Sharma ◽  
Vijayshri
Keyword(s):  
Growth Rate ◽  
Ion Beam ◽  
Maximum Growth ◽  
Maximum Growth Rate ◽  
Magnetized Plasma ◽  
Unstable Wave ◽  
Lower Hybrid ◽  
Hybrid Wave ◽  
Lower Hybrid Wave ◽  
Beam Density

AbstractLower hybrid wave excitation in magnetized plasma by an ion beam via Cerenkov interaction is studied. The lower hybrid modes showed maximum growth rate of the instability when phase velocity of the lower hybrid mode along the magnetic field is comparable to the electron thermal velocity. We have derived the expression for the maximum growth rate and found that the growth rate of the instability increases with beam density. Moreover, the maximum growth rate of the instability scales as the one-third power of the beam density. The real part of the frequency of the unstable wave increases as almost the square root of the beam energy.

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