Excitation of dust acoustic waves by an ion beam in a plasma cylinder with negatively charged dust grains

Journal Article · Wed Oct 15 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4897318· OSTI ID:22299729

Sharma, Suresh C. ^[1]; Kaur, Daljeet ^[2]; Gahlot, Ajay ^[3]; Sharma, Jyotsna ^[4]

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1. Department of Applied Physics, Delhi Technological University (DTU), Shahbad Daulatpur, Bawana Road, Delhi-42 (India)
2. Department of Physics, Guru Teg Bahadur Institute of Technology, Rajouri Garden, New Delhi (India)
3. Department of Physics, Maharaja Surajmal Institute of Technology, Janakpuri, New Delhi (India)
4. Department of Physics, KIIT College of Engineering, Bhondsi Gurgaon 122102 (India)

An ion beam propagating through a plasma cylinder having negatively charged dust grains drives a low frequency electrostatic dust acoustic wave (DAW) to instability via Cerenkov interaction. The unstable wave frequencies and the growth rate increase with the relative density of negatively charged dust grains. The growth rate of the unstable mode scales to the one-third power of the beam density. The real part of the frequency of the unstable mode increases with the beam energy and scales to almost one-half power of the beam energy. The phase velocity, frequency, and wavelength results of the unstable mode are in compliance with the experimental observations.

• OSTI ID: 22299729
• Journal Information: Physics of Plasmas, Vol. 21, Issue 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAMS
CYLINDERS
DENSITY
DUSTS
PHASE VELOCITY
PLASMA
SOUND WAVES