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
S.MANSERVISI, V.G MOLINARI, F. ROCCHI (2004). Bremsstrahlung emission spectrum for electron microprobe analysis. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 213c, 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.
