2022/09/23 by Christian Kisielowski, Petra Specht, Kisielowski, Christian +11
Physics and Astronomy · Engineering · #Mechanical and Optical Resonators #Geophysics and Sensor Technology #Terahertz technology and applications
paper · pdf · doi:10.48550/arxiv.2209.11846
The correlation between particle and wave descriptions of electron-matter interactions is analyzed by measuring the delocalization of an evanescent field using electron microscopy. Its spatial extension coincides with the energy-dependent, self-coherence length of propagating wave packets that obey the time-dependent Schrödinger equation and undergo a Goos-Hänchen shift. In the Heisenberg limit they are created by self-interferences during coherent-inelastic Coulomb interactions with a decoherence phase Δϕ = 0.5 rad and shrink to particle-like dimensions for energy losses of more than 1000 eV.