Wave excitation and fast ion generation in a double plasma device

Honzawa, Tadao

doi:10.1063/1.864699

Cited by 30 publications

(9 citation statements)

References 21 publications

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“…The ion temperature was not directly measured in the present experiment. Other experiments 34,35 had reported T i Ϸ 0.1 eV or T i Ϸ 0.2 eV under similar conditions. Deviations from room temperature were attributed to heating by gas friction in the presence of an electrostatic field.…”

Section: A Details Of Data Acquisitionmentioning

confidence: 54%

Effects of charge depletion in dusty plasmas

2011

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The charge reduction effect is studied in dense dust clouds. The saturation currents of Langmuir probes are used to derive the density of ions and electrons, which are calibrated with the plasma oscillation method. The plasma potential inside the dust cloud is measured with an emissive probe, which also yields the floating potential in a heated nonemitting mode. The presence of the dust also affects the density and the plasma potential of the ambient plasma. The ion densities inside the dust cloud and in the ambient plasma are found equal, while the electron density is reduced inside the dust cloud. The measured potentials are compared with current models. Inclusion of the bi-Maxwellian distribution of the electrons leads to an improved description in the limit of low dust density. The strong increase of the floating and cloud potential for high dust density, predicted by the constant ion density model, is not confirmed.

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Section: A Details Of Data Acquisitionmentioning

confidence: 54%

Effects of charge depletion in dusty plasmas

2011

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“…It should be noted here that a ''negative'' density pulse appears at such small distances in the case of the DP excitation. 2 The difference between the two cases may result from different ways of ion injection from the driver side to the target one, as will be described later. Furthermore, it is known from Fig.…”

Section: B Excitation Of Solitary Waves By Applying External Pulsesmentioning

confidence: 99%

“…3, which is almost equal to the ion-acoustic velocity as observed in a conventional DP device. 2,3 Other characteristics of excited waves will be described in the next section.…”

Section: B Excitation Of Solitary Waves By Applying External Pulsesmentioning

confidence: 99%

Wave excitation in a modified double plasma device

Honzawa

1998

Physics of Plasmas

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A modified double plasma (MDP) device is newly developed and shown to be useful for basic plasma wave experiments. Further, the mechanism of wave excitation in the MDP device is experimentally clarified. From the results the peculiarity of the device is found, that ion-acoustic waves can be excited in plasmas essentially freely from the effects of stationary beam ions and other modes, such as ion-beam modes as far as linear waves are concerned. For nonlinear waves, however, ion-acoustic solitons or shocks with reflected ions ahead and slower wave-like signals behind are possibly excited just as in a conventional DP device.

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“…Since Ikezi et al 1 observed an ionacoustic solitary wave in a double plasma machine, several authors have studied ion-acoustic solitary waves in laboratory experiments 2-9 as well as in particle-in-cell (PIC) simulations. [10][11][12][13][14] For instance, Nagasawa and Nishida 6 carried out experimental observations on the nonlinear reflection and refraction of a planar ion-acoustic solitary wave in a double plasma device. Lee et al 7 found a chain of solitary waves in a double plasma device, the characteristics of which agree well with the solution of the KdV equation for ion-beam plasma systems.…”

Section: Introductionmentioning

confidence: 99%

Ion-acoustic solitary waves in ion-beam plasma with Boltzmann electrons

et al. 2012

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Particle simulations and a pseudopotential method were used to study ion-acoustic solitary waves in a plasma composed of Boltzmann electrons and kinetic beam ions. Pseudopotential theory was first applied to determine how ion-acoustic solitary waves can exist in a two-component plasma. Then, particle simulations were carried out, wherein ion-acoustic solitary waves were excited by modulating the bias grid voltage in a double plasma model. For the modulation, the potential of the grid bias was rapidly decreased, such that hump-type ion-acoustic solitary waves with good Gaussian shape were excited one after another, forming a train of waves. The simulation also showed that the phase velocities of ions decrease sharply when the solitary wave occurs, which indicates that the solitary ion-acoustic wave is excited via the inverse Landau damping process. V C 2012 American Institute of Physics. [http://dx.

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Wave excitation and fast ion generation in a double plasma device

Cited by 30 publications

References 21 publications

Effects of charge depletion in dusty plasmas

Effects of charge depletion in dusty plasmas

Wave excitation in a modified double plasma device

Ion-acoustic solitary waves in ion-beam plasma with Boltzmann electrons

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