Interferometric analyser for energy distribution of charged particles - uses Fourier analysis to measure source distribution and characteristic losses

摘要

The Fourier spectroscopic measure for energy distribution of charged particles, comprises a beam source for providing coherent charged particles; a device modifying the spectral distribution of the particles, an electron or ion optical biprism beam splitter for producing separate coherent wave packets, a device longitudinally displaying the wave packets, a biprism or telescopic lens for producing interference of the wave packets, a sensor detecting the interference and appts. for quantitatively Fourier analysis the interference pattern. USE - Measuring spectral distribution of electron and ion sources and characteristic energy loss in electronmicroscopes.