Sökning: "DDSCS"

Hittade 2 uppsatser innehållade ordet DDSCS.

1. 1. Influence of non-dipole transitions on the extraction of EMCD

   Master-uppsats, Uppsala universitet/Materialteori

   Författare :Paul Michel Zeiger; [2019]
   Nyckelord :;

   Sammanfattning : ELNES-spectra of the L3 and L2-edge of bcc-iron are simulated using a Bloch wave method for the calculation of the DDSCS within a 1st-order Born approximation of the inelastic electron scattering process in order to study the influence of non-dipole terms on the EMCD-signal. The necessary electronic structure information is obtained from a DFT-calculation using WIEN2k. LÄS MER

3. 2. Shape functions in calculations of differential scattering cross-sections

   Kandidat-uppsats, Institutionen för fysik och astronomi

   Författare :Anders Johansson; [2010]
   Nyckelord :Differential cross-sections; DDSCS; EELS; ELNES; EMCD; Dynamical diffraction theory; thickness function; shape function; shape amplitude;

   Sammanfattning : Two new methods for calculating the double differential scattering cross-section (DDSCS) in electron energy loss spectroscopy (EELS) have been developed, allowing for simulations of sample geometries which have been unavailable to earlier methods of calculation. The new methods concerns the calculations of the thickness function of the DDSCS. LÄS MER