摘要:

AbstractResonant three‐wave interaction in a spatially non‐uniform MHD plasma is considered, and the coupling coefficients are deri

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250102

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY

摘要:

AbstractThree Coupled nonlinear Schrödinger equations for two transverse and one longitudinal waves has been derived. These equations have been derived using two space time scale techniques. It is shown that even without the effect of relativistic mass variation and ion contribution, all three waves may propagate in the form of localized solitary envelope with a common velocity for small values of the transverse wave numbers and the longitudinal wave number far exceedingkD√me/mi. Stability analysis of the localized solitary wave form reveals that these wave forms are stab

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250103

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY

摘要:

AbstractExpressions for power reflection (R), transmission (T) and absorption (A) coefficients forp‐polarized wave for a warm, collisional, magnetized and moving plasma slab (with sharp boundaries and thicknessd0) are investigated. The effects of plasma slab velocity (β=v/c), electron density (ωp/ω)2and plasma temperature (KBT) on reflection (R), transmission (T) and absorption (A) coefficients are discussed numerically. It is observed that for the value β=−0.6, reflection coefficient (R) becomes more than unity, whereas absorption coefficient (A) becomes quite negligible while transmission coefficient (T) shows oscillatory behaviour. The variation with plasma frequency (ωp/ω)2shows that at lower plasma frequency (ωp/ω)2=0.2 transmission (T) and absorption (A) coefficients are minimum while reflection coefficient (R)

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250104

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY

摘要:

AbstractThe propagation and absorption of ECR waves in a tokamak plasma with small size and low values of the electron temperature and the toroidal magnetic field is studied numerically. The cold plasma dispersion equation is solved and ray tracing calculations are performed to find the accessibility conditions and the optimal angle of wave launching for maximal ECR absorption. Absorption coefficients are computed in the high density approximation.

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250105

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY

摘要:

AbstractStepwise excitation cross sections of the rare gases helium, neon and argon were obtained by an indirect method resting on the combination of experimentally determined excited species number densities of the rare gas atoms in the positive column of a low pressure glow discharge with the results of the theory of the positive column and electron kinetics. Furthermore a semiempirical expression of the excitation functions basing on the analysis of the Born‐approximation and modifications as well as a formula of Vainstein is offere

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250106

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY

摘要:

AbstractThough intense work on the development of a full colour flat TV display panel based on gas discharges has produced considerable progress over the last 10 years no practicable technological solutions have been found [1–2]. Of the different approaches the alternating current (ac) discharge has been proved suitable for the alphanumerical and graphical display technique and the direct current (dc) discharge for colour TV panels. To reach such aims as improved optical efficiency, colour gamut and increased life time as well as simpler manufacturing technology and more effective addressing for reducing costs, long‐term basic research in the field of gas discharges and phosphors and the development of special technologies is necessary [3–8]. The present review is an attempt to give a survey of this situation. In Chap. 1 the trends of development, general problems of colour, display types and TV are dealt with, and in Chap. 2 and 3 the literature on dc and ac‐display panels is r

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250107

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY

ISSN:0005-8025    

DOI:10.1002/ctpp.19850250101

出版商:WILEY‐VCH Verlag    

年代:1985

数据来源: WILEY