Cold Plasma Injection on VLF Wave Mode for Relativistic Magnetoplasma With A.C. Electric Field

Pandey, R. S.; Pandey, Rishikesh

doi:10.2528/pierc08022501

Cited by 9 publications

(10 citation statements)

References 24 publications

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“…A variable DC biasing source is connected across these small probes with an associated current through the circuit as shown in the Figure 1. If the electrons in discharge plasma obey the Maxwellian energy distribution, then the plasma parameters can be evaluated from the I-V characteristics curve of double probe using the equation given below [1,5,6]:…”

Section: Symmetric Double Probementioning

confidence: 99%

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Symmetric and Asymmetric Double Langmuir Probes Characterization of Radio Frequency Inductivley Coupled Nitrogen Plasma

Naz¹,

Ghaffar²,

Rehman³

et al. 2011

PIER

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Abstract-The symmetric and asymmetric double Langmuir probe systems with their necessary driving circuits are developed for characterization of low pressure inductively coupled nitrogen plasma, generated and sustained with 13.56 MHz RF source and an automatic impedance matching network. First of all, the plasma parameters such as ion saturation current, electron temperature and electron number density are determined with symmetric double probe system at different input RF powers, filling gas pressures and radial distance from the plasma chamber wall. Then the electron temperature and electron energy probability function are determined with asymmetric double probe system at the centre of the discharge plasma chamber by changing the filling gas pressure and input RF power. It is observed that the electron temperature and electron number density increase with the increase in input RF power and radial distance but decreases with the increase in filling gas pressure. The electron energy probability function determined with asymmetric probe system evidently deviates from the Maxwellian, particularly at low filling gas pressures.

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Section: Symmetric Double Probementioning

confidence: 99%

“…The discharge plasma parameters such as kT e , n e [5] and I io were evaluated as the function of input plasma parameters. In the present work which is an extension of our previous work, DC biased symmetric and asymmetric double Langmuir probes [6,7] are developed along with their necessary driving circuits.…”

Section: Introductionmentioning

confidence: 99%

Symmetric and Asymmetric Double Langmuir Probes Characterization of Radio Frequency Inductivley Coupled Nitrogen Plasma

Naz¹,

Ghaffar²,

Rehman³

et al. 2011

PIER

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show abstract

“…Thus with a view to investigate the role of A.C. electric field along with parameter variations of cold plasma density and hot energy protons on the generation of EMIC waves was sought to explain the AMPTE/CCE data of morning/evening sector in the magnetosphere around L = 7. Further, the day time PC-1 waves found to appear in frequency range above the helium gyrofrquency during substroms, are mainly due to increase in energetic proton flux [31,44].…”

Section: Introductionmentioning

confidence: 99%

Study of Electromagnetic Ion-Cyclotron Instability in a Magnetoplasma

Pandey¹,

Singh²

2010

PIER M

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Abstract-Excitation of electromagnetic ion-cyclotron instability in the magneto plasma in the presence of perpendicular A.C. electric field for a generalized distribution function for background cold electrons and hot ion plasma has been studied. This distribution function is reducible to anisotropic and loss-cone type for different values of spectral index j. The particle trajectories have been estimated and used to find the dispersion relation and growth rate by using the method of characteristic solutions. Temporal electromagnetic ion cyclotron instability for various plasma parameters has been studied. The role of choice of parameters, distribution function and simultaneous presence of A.C. electric field is studied for excitation of electromagnetic ion cyclotron instability. The results have been used to explain the satellite observations of AMPTE/CCE and compared with earlier work done for temperature anisotropy and other types of distribution functions using other techniques.

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“…Most of DBDs can successfully be operated with high frequencies ranging from few kHz to few MHz [2,3]. These high frequency operations are necessary for production of metastable species which play a major role during the generation of discharge plasmas through penning ionization.…”

Section: Introductionmentioning

confidence: 99%

OPTICAL CHARACTERIZATION OF 50 Hz ATMOSPHERIC PRESSURE SINGLE DIELECTRIC BARRIER DISCHARGE PLASMA

Naz¹,

Ghaffar²,

Rehman³

et al. 2012

PIER M

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Abstract-A low frequency (50 Hz) dielectric barrier discharge (DBD) system with a single dielectric cover on copper coil anode is designed to generate and sustain the micro-discharge plasma which is very practical for material processing applications. The DBD system is powered by a high tension ac source consisting of a conventional step up transformer and variac. The dielectric barriers (quartz and glass) between the conducting electrodes appreciably influences the discharge plasma characterized by optical emission spectroscopy technique. Using intensity ratio method, the electron temperature and electron number density are determined from recorded spectra as function of ac input voltage, type and thickness of dielectric barrier and inter-electrode gap. It is observed that both the electron temperature and electron number density increase with the increase in ac input voltage and ε r / d ratio, while a decreasing trend is observed with increase in inter-electrode gap.

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Cold Plasma Injection on VLF Wave Mode for Relativistic Magnetoplasma With A.C. Electric Field

Cited by 9 publications

References 24 publications

Symmetric and Asymmetric Double Langmuir Probes Characterization of Radio Frequency Inductivley Coupled Nitrogen Plasma

Symmetric and Asymmetric Double Langmuir Probes Characterization of Radio Frequency Inductivley Coupled Nitrogen Plasma

Study of Electromagnetic Ion-Cyclotron Instability in a Magnetoplasma

OPTICAL CHARACTERIZATION OF 50 Hz ATMOSPHERIC PRESSURE SINGLE DIELECTRIC BARRIER DISCHARGE PLASMA

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