## Proceedings of the International School of Physics "Enrico Fermi.", Volume 25N. Zanichelli, 1953 - Nuclear physics |

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Page 102

In front of the

density up to (10"--107) A/cm2. In general the constriction in front of the anode is

smaller than that in front of the

In front of the

**cathode**this constriction process causes an increase in the currentdensity up to (10"--107) A/cm2. In general the constriction in front of the anode is

smaller than that in front of the

**cathode**; the voltage requirement of the electric ...Page 105

[V*/cm2], where j, is the emission current density at the

potential across the space-charge region. V., X, and j, have to be measured in V,

V/cm and A/cm3, respectively. MacKeowns formula is based on the assumption

that ...

[V*/cm2], where j, is the emission current density at the

**cathode**and V, thepotential across the space-charge region. V., X, and j, have to be measured in V,

V/cm and A/cm3, respectively. MacKeowns formula is based on the assumption

that ...

Page 118

Within the frame of the above picture of the

back from the

the « retrograde side of the

Within the frame of the above picture of the

**cathode**region the electrons travelback from the

**cathode**through the potential tube of the ions and enter the gas onthe « retrograde side of the

**cathode**spot. Here they produce a new ion cloud by ...### What people are saying - Write a review

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### Contents

LEZIONI | 1 |

carrier mass | 159 |

hydrodynamique au voisinage dun axe magnétique | 214 |

Copyright | |

2 other sections not shown

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### Common terms and phrases

adiabatic invariant amplitude approximation assumed Boltzmann equation boundary conditions boundary layer calculated cathode charge coefficient collision components consider const constant contraction corresponds courbe critère current density Debye length derived differential equations discharge dispersion relation distribution function dºr eigenvalue electric field electromagnetic waves electrostatic energy principle equations of motion equilibrium exp i(k exp ioctl exp ior experimental finite fluid theory frequency given Hence instability integral interaction ioctl ionized KRUSKAL l'axe magnétique lignes limit lowest order magnetic field Maxwell's equations negative ions nonlinear obtain parameter particle perturbation Phys plasma oscillations Plasma Physics Poisson's equation potential problem quantities radial region satisfied saturation current ſº solution solving stabilité stability surface temperature thermal tion values vanish variables vector velocity voisinage waves in plasmas zero zero-order