Excitation of electrostatic ion-cyclotron waves by an ion beam in a two-ion component plasma

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3522876· OSTI ID:21532130

Sharma, Jyotsna ^[1]; Sharma, Suresh C ^[2]

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1. Department of Physics, KIIT College of Engineering, Bhondsi Gurgaon 122102 (India)
2. Department of Physics, Maharaja Agrasen Institute of Technology, PSP Area Plot No.-1, Sector-22, Rohini, Delhi 110086 (India)

An ion beam propagating through a magnetized plasma cylinder containing electrons, light positive potassium ions (K{sup +}), and heavy positive cesium ions (Cs{sup +}) drives electrostatic ion cyclotron (EIC) waves to instability via Cerenkov interaction. Two EIC wave modes are present, the K{sup +} and Cs{sup +} modes. The unstable wave frequencies and the growth rate of both the light positive ion and heavy positive ion modes increase with an increase in their relative ion concentrations. The growth rate of both the unstable modes (K{sup +} and Cs{sup +}) scales one-third power of the beam density. The real part of the frequency of both the unstable modes (K{sup +} and Cs{sup +}) increases with the beam energy and scales as almost one-half power of the beam energy. Numerical calculations of the growth rate and mode frequencies have been carried out for the parameters of the experiment of Suszcynsky et al. [J. Geophys. Res. 94, 8966 (1989)]. It is found that the unstable wave frequencies of both the light positive ion and heavy positive ion modes increase with the magnetic fields in accordance with the experimental observations.

• OSTI ID: 21532130
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 17; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATORS
BEAM-PLASMA SYSTEMS
BEAMS
CESIUM IONS
CHARGED PARTICLES
CYCLIC ACCELERATORS
CYCLOTRONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
INSTABILITY
ION BEAMS
ION PLASMA WAVES
ION WAVES
IONS
PLASMA
PLASMA INSTABILITY
PLASMA WAVES
POTASSIUM IONS