PMID- 15996820 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20050929 LR - 20050722 IS - 0304-3991 (Print) IS - 0304-3991 (Linking) VI - 104 IP - 3-4 DP - 2005 Oct TI - Calculations of HREM image intensity using Monte Carlo integration. PG - 271-80 AB - We have developed a numerical approach for the accurate and efficient calculation of HREM image intensity formed using a partially coherent source. The approach is based on Monte Carlo integration, and is suitable for use in general image restoration methods using a series of images. The accuracy of this approach is compared with calculations based on the transmission cross coefficient (TCC) for strong scattering objects, as a function of the number of sampling points, defocus, atomic number and specimen thickness. Its efficiency is compared with that of exact TCC calculations based on equally-spaced sampling of the beam divergence and focal spread distributions. The results indicate that the Monte Carlo approach is particularly advantageous for nonlinear image restoration algorithms. FAU - Chang, L Y AU - Chang LY AD - Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom. lanyun.chang@materials.ox.ac.uk FAU - Meyer, R R AU - Meyer RR FAU - Kirkland, A I AU - Kirkland AI LA - eng PT - Journal Article PL - Netherlands TA - Ultramicroscopy JT - Ultramicroscopy JID - 7513702 EDAT- 2005/07/06 09:00 MHDA- 2005/07/06 09:01 CRDT- 2005/07/06 09:00 PHST- 2004/12/11 00:00 [received] PHST- 2005/05/05 00:00 [revised] PHST- 2005/05/18 00:00 [accepted] PHST- 2005/07/06 09:00 [pubmed] PHST- 2005/07/06 09:01 [medline] PHST- 2005/07/06 09:00 [entrez] AID - S0304-3991(05)00090-2 [pii] AID - 10.1016/j.ultramic.2005.05.003 [doi] PST - ppublish SO - Ultramicroscopy. 2005 Oct;104(3-4):271-80. doi: 10.1016/j.ultramic.2005.05.003.