摘要:

AbstractWe have studied the effect of rotation on the development of Rayleigh‐Taylor instability of an incompressible, viscous, Hall, finitely conducting plasma of variable density. The solution is developed, through variational methods, for a semi‐infinite plasma in which the density varies exponentially along the vertical. It is found that the system is unstable for all wave numbers when the effects of magnetic resistivity are included. The effects of coriolis forces and viscosity on the growth rate of the unstable system are found to be stabilizing while that of Hall currents is destabilizing. Finite conductivity affects the growth rate of the unstable mode differently for the smaller and larger values of the wave numbers, destabilizing for the waves of large wave length and stabilizing for waves of small wave len

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180402

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractAlthough some calculations will be specialized for toroidal systems, some conclusions will be valid independent of the coordinate system. The manuscript contains 1. a proof that on the basis of a solution of Maxwell's equations a solution of curlB= constBmay be found, 2. a method to transform the vector Helmholtz equation into a scalar one, 3. three solutions of the scalar Helmholtz equation, of Maxwell's equations and of curlB= constBin quasi‐toroidal coordinates, 4. a method to construct solutions of curlB×B= 4πΔp on the basis of solutions of curlB= constB(including two special solutions and a derivation of the toroidal Shafranov, equat

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180403

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe basic equations for electron‐ion plasma waves in a warm fluid plasma exhibiting a Langevin friction term are derived. A numerical solution is given for stationary ions and analytical solutions are given for some special case

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180404

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe influence of finite ion temperature on the properties of strongly non‐linear ion acoustic solitary waves is discussed within the framework in Sakanaka's ion fluid mode

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180405

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe stability of the electromagnetic plasma confinement by powerful externals‐polarized pump waves is considered. The parametric excitation of standing electromagnetic waves along the plasma boundary with frequencies close to the frequency of the pump wave leads to a periodic density modulation of the plasma boundary. The density disturbances along the direction of the external wave field are connected to the excitation of transversep‐polarized surface waves while the modulation in the direction perpendicular to the pump field are created by the parametric interaction between the external wave ands‐polarized trapped leaking oscillations. Only when the leaking waves are excited the scale length of the modulation is larger than half the free space wave length of the incident radi

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180406

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractAn instability of a magnetized plasma column in the frequency range has been identified as an ion acoustic one. The waves are azimuthally driven by the electron diamagnetic velocity due to the radial gradient of a fast electron tail. The strongest peaks in the frequency spectrum correspond tom= 6 or 8 wave lengths on one turn. This selection can be explained as an optimum value between increasing growth rate and the resonance disturbing phase mismatch at higher mode numbers.

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180407

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractIn diesem zweiten Teil werden in Fortführung der Untersuchungen in [1] die Ergebnisse einer mikrophysikalischen Berechnung der Elektronenstoßfrequenzen für die Anregung und Ionisierung langlebiger elektronischer Molekülzustände und der Energieverlustraten der Elektronenkomponente bei den elastischen Stößen, der Schwingungsanregung, der elektronischen Anregung, der Dissoziation und der Direktionisation der Moleküle im N2–H2‐Mischplasma mitgeteilt und diskutiert. Die Untersuchungen beziehen sich auf ein schwachionisiertes homogenes und stationäres Mischplasma und wurden für den Bereich 6–100 V/(em Torr) des auf den Totaldruck bezogenen elektrischen Feldes und für beliebige Zusammensetzung des Gemi

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180408

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractSelf‐limiting discharges occur on contaminated cathodes in UHV without any contribution of the anode. They propagate over the cathode surface with velocities ≥ 5.104m/s, preferentially along grain boundaries. From these observations an analogy is suggested between micro‐discharges in high voltage gaps and are spots with weak er

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180409

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe 1‐dimensional 2‐zone theory of a quiet, high current are in a narrow slit chamber, first formulated by FRIND, is extended. Central temperature resp. heat flux potential and voltage/current characteristic are evaluated in a resistor stabilized regime. The influence of finite extension of the flat are (in 2nd dimension) on conductivity and temperature distributions as well as thermal are constant is treated. The formation of a highly conducting core sheath is modelled in a flat 3‐zone description. The limitations of 1‐dimensional flat are theory are discussed in this

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180410

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

ISSN:0005-8025    

DOI:10.1002/ctpp.19780180401

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY