Dispersion and Absorption of Longitudinal Electro-Kinetic Waves in Magnetized Ion-Implanted Semiconductor Plasmas

• Authors: S. Ghosh , Preeti Thakur
• Languages of publication: EN

Abstracts

EN

The instability of longitudinal electro-kinetic wave that is propagating across the magnetic field B_0 in ion-implanted group-IV semiconductor sample consisting of non-drifting electrons, holes, and negatively charged colloids is investigated. Using hydrodynamic approach, a compact dispersion relation D(ω,k) is derived for the same. The propagation and amplification characteristics of the wave in collision dominated regime are studied numerically in detail for slow and fast modes. Results show that the presence of transverse magnetic field is responsible for the modification of the existing wave spectra of the slow electro-kinetic branch. In case of fast electro-kinetic wave, the presence of magnetic field is found responsible for excitation and amplification of a new mode. It is also found that the magnetic field is responsible for the conversion of two existing aperiodic modes into periodic ones. These novel periodic modes are found to be counter-propagating in nature.

Keywords

EN

52.35.Fp; 61.72.Ww; 82.70.Dd

Discipline

• 82.70.Dd: Colloids
• 52.35.Fp: Electrostatic waves and oscillations (e.g., ion-acoustic waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 2
• Pages: 247-256

Dates

published

2007-02

received

2006-02-06

Contributors

author

S. Ghosh

• School of Studies in Physics, Vikram University, Ujjain-456 010 (M.P.), India

author

Preeti Thakur

• School of Studies in Physics, Vikram University, Ujjain-456 010 (M.P.), India

References

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Identifiers

DOI

10.12693/APhysPolA.111.247