A Fokker-Planck analytical solution for an electron beam which slows down in a 3D rectangular sample and thermalizes through electron-ion Coulomb interactions has been found. In absence of electron removal the stationary solution is a Maxwellian distribution and if removal is taken into account the solution exhibits a Maxwellian-like behavior at low energies and a nonMaxwellian behavior at higher energies. From the electron distribution function, the free-free emission Bremsstrahlung spectrum has been obtained analytically for unitary Gaunt factor and a first estimate of the continuum and discrete spectrum is presented
Bremsstrahlung emission spectrum for electron microprobe analysis / S.MANSERVISI;V.G MOLINARI; F. ROCCHI. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - STAMPA. - 213c:(2004), pp. 134-138. [10.1016/S0168-583X(03)01547-7]
Bremsstrahlung emission spectrum for electron microprobe analysis
MANSERVISI, SANDRO;
2004
Abstract
A Fokker-Planck analytical solution for an electron beam which slows down in a 3D rectangular sample and thermalizes through electron-ion Coulomb interactions has been found. In absence of electron removal the stationary solution is a Maxwellian distribution and if removal is taken into account the solution exhibits a Maxwellian-like behavior at low energies and a nonMaxwellian behavior at higher energies. From the electron distribution function, the free-free emission Bremsstrahlung spectrum has been obtained analytically for unitary Gaunt factor and a first estimate of the continuum and discrete spectrum is presentedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
