Combination of Electron Energy-loss Spectroscopy and Orbital Angular Momentum Spectroscopy. Applications to Electron Magnetic Chiral Dichroism, Plasmon-loss, and Core-loss

Electron energy-loss spectroscopy (EELS) is a powerful technique for measuring the energy state of electrons after scattering. It has had incredible success in measuring the atomic and chemical properties of materials, allowing chemical maps to be recorded with atomic spatial resolution. Energy information alone is often sufficient to obtain information about chemical species, plasmons or even phonon excitations, especially when using high-energy-resolution spectrometers and gun monochromators. However, it is sometimes desirable to add a second dispersion variable, either in the form of momentum and energy double-dispersion EELS, or by acquiring a spectrum for a given momentum transfer.