## Particle induced electron emission IThis monograph discusses collision-induced electron emission from nearly free-electron metals by ion or electron impact. This subject is, as is well known, of acute importance in understanding plasma-wall interactions in thermonuclear reactors. It is also the basis for one of the most exciting technological developments of the last few years - scanning electron miscroscopy. Several electron excitation mechanisms of electrons in the target are considered: excitation of single conduction and core electrons, excitation by plasmon decay and by Auger processes. Transport of inner excited electrons is simulated by the Boltzmann equation incorporating both elastic and inelastic collisions. The numerical calculation of scattering rates uses a dynamically screened Coulomb interaction. These results for the energy distributions of emerging electrons as well as the electron yield are compared with recent experimental measurements on electron emission from polycrystalline aluminum. |

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### Contents

Theory of Electron Emission from NearlyFreeElectron Metals | 1 |

Escape of Secondary Electrons | 8 |

Excitation Functions | 23 |

Copyright | |

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aluminum angle angular distribution Appendix approximation atomic Auger backscattered Bindi Boltzmann equation Cailler calculated Chap conduction band conduction electrons contribution dashed curve Dehaes density Devooght dielectric function Dubus elastic scattering electron energy electron excitation electron flux electron yield energy distribution energy electron energy loss energy range Everhart excitation mechanisms excitation rate excited electrons experimental results Ganachaud and Cailler Green's function Gryzinski Hasselkamp high primary energies incident electrons inelastic collisions inelastic mean free infinite medium inner excited integral interaction interband processes ionization isotropic jellium loss function low energy mean free path method number of electrons obtained outgoing electron particle Phys plasmon decay potential proton PWEM Roptin Rosler and Brauer Rutherford cross section scattering cross sections scattering function screened Rutherford secondary electron Sect Shimizu slowing-down solid spectrum stopping power surface plasmons take into account target theoretical theory transition transport equation values wave number