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

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Page 5

The first major problem of kinetic theory is to find an approximate form for I(f); the

second being that of

moments required for a macroscopic description of phenomena. For diffuse

gases in ...

The first major problem of kinetic theory is to find an approximate form for I(f); the

second being that of

**solving**(I.1.10) for a given form of I and deducing themoments required for a macroscopic description of phenomena. For diffuse

gases in ...

Page 20

Bernstein and Robinson evaluated this result by considering a Lorentz gas (in

which I(--) = 0), which may be

results. The results of these rather elaborate calculations differ from the m.f. time .

Bernstein and Robinson evaluated this result by considering a Lorentz gas (in

which I(--) = 0), which may be

**solved**exactly, and claim 10% accuracy for allresults. The results of these rather elaborate calculations differ from the m.f. time .

Page 141

to be substituted in the Poisson equation W. E = ik E = 4:10 = 4:ve[n, -ī- n_]. This

gives immediately the dispersion relation 2 Op. o: * - so I VF is (1.6) [o – kV].

**Solving**, we find e E. (1.5) m1 = ik no m [o + kV| The perturbed densities are nowto be substituted in the Poisson equation W. E = ik E = 4:10 = 4:ve[n, -ī- n_]. This

gives immediately the dispersion relation 2 Op. o: * - so I VF is (1.6) [o – kV].

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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