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

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Page 189

In linear theory, the

nonlinear terms of the equations of motion are taken into account, it is found that

the resulting modification of the dynamical

parts: a ...

In linear theory, the

**variables**a(k, t) are in fact independent of time. Whennonlinear terms of the equations of motion are taken into account, it is found that

the resulting modification of the dynamical

**variables**may be separated into twoparts: a ...

Page 201

It is convenient to work with complex amplitudes as independent

is also necessary for subsequent purposes to maintain the canonical formalism.

Both requirements can be met as follows: It is possible to transform to action ...

It is convenient to work with complex amplitudes as independent

**variables**, but itis also necessary for subsequent purposes to maintain the canonical formalism.

Both requirements can be met as follows: It is possible to transform to action ...

Page 208

We carry out a canonical transformation of the dynamical

eliminates the cubic contribution to the Hamiltonian, and then pick out the zero-

frequency contribution to the resulting quartic part of the Hamiltonian. The

technique for ...

We carry out a canonical transformation of the dynamical

**variables**whicheliminates the cubic contribution to the Hamiltonian, and then pick out the zero-

frequency contribution to the resulting quartic part of the Hamiltonian. The

technique for ...

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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