Exploration of Single-Atom X-ray Analysis in an Analytical Electron Microscope

X-ray microanalysis attachment for electron microscope.

CHAPTER 4 pgINCIPLES OF X - RAY ENERGY - DISPERSIVE SPECTROMETRY IN THE ANALYTICAL ELECTRON MICROSCOPE

INSTRUMENTATION The EnergyDispr5jy Spectrometer The Solid state x-ray detector or energy-dispersive spectrometer (EDS) was 1°Ped in the late l960s and rapidly found use on electron-beam instruments rald er a!., 1968) because of its speed in collecting and simultaneously displaying da from a wide energy range. Its small size, but relatively large collection angle 123 Authors Copy

Analytical formulae for calculation of X-ray detector solid angles in the scanning and scanning/transmission analytical electron microscope.

Closed form analytical equations used to calculate the collection solid angle of six common geometries of solid-state X-ray detectors in scanning and scanning/transmission analytical electron microscopy are presented. Using these formulae one can make realistic comparisons of the merits of the different detector geometries in modern electron column instruments. This work updates earlier formula...

Prospects for Trace Analysis in the Analytical Electron-Microscope

The analytical electron microscope (AEM) uses a high energy (>100 kV) beam of electrons to generate a range of signals from a thin foil sample as shown in figure la [1,2]. Various detectors are configured in the AEM to pick up most of the generated signals (fig. lb). Microanalysis is usually performed using the characteristic x-ray signal, detected by an energy dispersive spectrometer (EDS) alt...

Imaging atom - clusters by hard x - ray free electron lasers

PACS. 61.10.-i – X-ray diffraction and scattering. PACS. 32.80.-t – Photon interactions with atoms. PACS. 36.40.-c – Atomic and molecular clusters. Abstract. – The ingenious idea of single molecule imaging by hard x-ray Free Electron Laser (X-FEL) pulses was recently proposed by Neutze et al. [1]. However, in their numerical modelling of the Coulomb explosion several interactions were neglected...