• Keine Ergebnisse gefunden

Effects of Ions on the Propagation of Langmuir Oscillations in Cold Quantum Electron-Ion Plasmas

N/A
N/A
Protected

Academic year: 2022

Aktie "Effects of Ions on the Propagation of Langmuir Oscillations in Cold Quantum Electron-Ion Plasmas"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Volltext

(1)

Effects of Ions on the Propagation of Langmuir Oscillations in Cold Quantum Electron-Ion Plasmas

Hyun-Jae Rhee and Young-Dae Jung

Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791, South Korea Reprint requests to Prof. Y.-D. J.; E-mail: ydjung@hanyang.ac.kr

Z. Naturforsch.63a,400 – 404 (2008); received February 11, 2008

The effects of ions on the propagation of Langmuir oscillations are investigated in cold quantum electron-ion plasmas. It is shown that the higher and lower frequency modes of the Langmuir oscilla- tions would propagate in cold quantum plasmas according to the effects of ions. It is also shown that these two propagation modes merge into one single propagation mode if the contribution of ions is neglected. It is found that the quantum effect enhances the phase and group velocities of the higher frequency mode of the propagation. In addition, it is shown that the phase velocity of the lower fre- quency mode is saturated with increasing the quantum wavelength and further that the group velocity of the lower frequency mode has a maximum position in the domains of the wave number and quan- tum wavelength.

Key words:Effects of Ions; Langmuir Oscillations; Cold Quantum Plasmas.

Referenzen

ÄHNLICHE DOKUMENTE

Five origin bands of higher excited states of polyacetylene cations have been observed by two-colour, two-photon resonance-enhanced photodissociation spectroscopy for the first time

One of the challenges related to astronomical observations, in particular of absorptions in diffuse interstellar clouds, is to measure in the laboratory the

Distribution of balloelectric ions according to the number of water molecules A, B, C ja D are levels of neutralizing ionization in the laboratory experiment.. Distribution

Figure 1 represents the total eikonal scattering phase shift χ E for the elastic electron–ion collision in quan- tum plasmas including the influence of the electron exchange and

In summary, we have shown the existence of new localized nonlinear structures for the electrostatic po- tential and the electron density in the form of bright and W-shaped solitons

The modified interaction model taking into account the nonthermal screen- ing and plasmon effects is employed to represent the electron-ion interaction potential in hot

Thus, in the present paper we investigate the non- thermal and plasmon effects on the elastic electron- ion collision in hot quantum Lorentzian plasmas. The modified interaction

Using the Born approximation for the initial and final states of the projectile electron, the bremsstranhlung radiation cross section is obtained as a function of the grain size,