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

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Page 102

Finally, in a transverse magnetic field the cathodic part of the arc shows the

unexpected phenomenon of retrograde motion 9. Depending on the pressure

and the current, the onset at the cathode moves in a direction opposite to

Ampère's

Finally, in a transverse magnetic field the cathodic part of the arc shows the

unexpected phenomenon of retrograde motion 9. Depending on the pressure

and the current, the onset at the cathode moves in a direction opposite to

Ampère's

**rule**.Page 189

... k,)*}] - The time dependence of the amplitude is not expressed explicitly in this

equation. It is seen from (4.7) that, to lowest order, nonlinearity may be regarded

as interaction of electrostatic waves in groups of four, satisfying the selection

...

... k,)*}] - The time dependence of the amplitude is not expressed explicitly in this

equation. It is seen from (4.7) that, to lowest order, nonlinearity may be regarded

as interaction of electrostatic waves in groups of four, satisfying the selection

**rule**...

Page 195

One might expect energy and momentum to be separately conserved in an

interacting group, but it turns out that there is indeed a stronger set of relations

which may be established [8]. If the selection

written ...

One might expect energy and momentum to be separately conserved in an

interacting group, but it turns out that there is indeed a stronger set of relations

which may be established [8]. If the selection

**rules**for a given group of waves arewritten ...

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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