FEMTO-SECOND ELECTRON POINT SCOURCES DEPHASING AND DECOHERENCE AND NANO-FABRICATED GRATINGS COVARIANCE AND SELF-INTERACTION KAPITZA-DIRAC EFFECT AHARONOV-BOHM EFFECT ELECTRON STERN-GERLACH MAGNETS A MACH-ZEHNDER ELECTRON INTERFEROMETER DIFFRACTION, BEAMSPLITTING AND DECOHERENCE Research Research: Coherent Electron Control Quantum Properties and Analogues