摘要:

AbstractThe occurrence of turbulence and its influence on plasma viscosity have been investigated. A simple model of turbulence has been obtained by the balance of the growth of the combined Rayleigh‐Taylor and Kelvin‐Helmholtz instability with the damping by friction against the neutrals, by kinetic viscosity and by turbulent viscosity itself. In the experiment, a hollow cathode arc, three regimes can be distinguished: a kinetic, a frictional and a turbulent regime. By variations of the discharge parameters around a suitably chosen operating point, transitions between the three regimes are caused. It appears that the longitudinal drift velocity is also influenced by the turbulence. A dispersion relation for the large scale oscillation of the whole arc has been derived and checked experimenta

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260502

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractThe return of a deflected wall‐stabilized electric arc to the axial position is studied as a relaxation process within the framework of the after‐effects theory. The arc displacement is defined as an internal thermodynamics parameter and the determination of the affinity of this process was based on relaxation characteristic t

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260503

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260504

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractFor arcs with zirconium cathodes in nitrogen, experimental results are presented about changes of material and structure of the cathode, temperature fields, current densities, heat flows, electron work function and erosion rate. The cathode heat regime is described theoretically. In the experiments, the arc current was 50–200

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260505

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractThree particle effects on the electrical conductivity of hydrogen plasmas are investigated within the Green's function formalism. The transport collision frequency due to e−— H(1s)‐scattering is found to cause a significant lowering of the conductivity isotherms forT≳ 104K. This behaviour is similar to that found for caesium

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260506

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractA generalization of Kubo's linear response theory to Zubarev‐Mc Lennan initial state is presented. In this framework the transport coefficients of nonideal plasmas are derived in the linear‐field limit. The formalism allows for the incorporation of conservation laws and the correct solution of the screening problem. Special characteristics of dilute systems are discus

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260507

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractThe thermosolutal instability of a plasma is studied to include the effects of coriolis forces and the finiteness of ion Larmor Radius in the presence of transverse magnetic field. It is observed that the effect of rotation is destabilizing only in a typical case. However, the F. L. R. and stable solute gradient have stabilizing effects on stationary convection irrespective of the presence of coriolis forces.

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260508

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractThe second harmonic generated by non‐linear self interaction of a magneto‐acoustic wave in a planar plasma‐filled waveguide is a freely propagating mode. Coupled‐mode equations for resonant nonlinear interaction of this second harmonic mode with the fundamental mode are derived. Using these equations the possibility of generation of the second harmonic is a

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260509

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

摘要:

AbstractThe contribution of higher‐order terms on the nonlinear propagation of electron acoustic waves has been investigated, using the reductive perturbation technique. A modifiedKdVequation for the first order perturbed potential and a linear inhomogeneous equation for the second order perturbed potential have been derived. The soliton width and amplitude have been calculate

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260510

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY

ISSN:0005-8025    

DOI:10.1002/ctpp.19860260501

出版商:WILEY‐VCH Verlag    

年代:1986

数据来源: WILEY