Počet záznamů: 1
Optimizing the recognition of surface crystallography
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SYSNO ASEP 0431336 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Optimizing the recognition of surface crystallography Tvůrce(i) Frank, Luděk (UPT-D) RID, SAI, ORCID
Müllerová, Ilona (UPT-D) RID, SAI, ORCIDCelkový počet autorů 2 Zdroj.dok. 9th International Conference on Charged Particle Optics. Book of Abstracts. - Brno : Institute of Scientific Instruments AS CR, v. v. i, 2014 - ISBN 978-80-87441-11-4
S. 88Poč.str. 1 s. Forma vydání Tištěná - P Akce International Conference on Charged Parrticle Optics /9./ Datum konání 31.08.2014-05.09.2014 Místo konání Brno Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova SEM ; crystallography Vědní obor RIV JA - Elektronika a optoelektronika, elektrotechnika CEP TE01020118 GA TA ČR - Technologická agentura ČR Institucionální podpora UPT-D - RVO:68081731 Anotace Acquisition of surface crystallographic information represents a task of continually increasing importance for analytical instrumentation. In particular, the scanning electron microscopy is capable of serving this purpose at high to medium electron energies by means of the diffraction-based EBSD method, as well as at low and very low energies in the backscattered electron (BSE) mode. What is traditionally neglected is utilization of information contained in the overall angular distribution of non-diffracted BSE. We have equipped our ultrahigh vacuum scanning low energy electron microscope with a scintillatorbased detector of BSE, freely movable above the sample in a plane containing the optical axis, in order to acquire BSE from a particular interval of the polar angles of emission (scintillator size establishes the FWHM to between 9 and 19°). The sample was a polycrystalline 98Cu2Sn alloy cleaned by means of repeated Ar ion beam bombardment and annealing. Atomical cleanliness was checked by Auger spectroscopy. Grain contrast was measured for selected couples of grains. Preliminary results show the grain contrast generally increasing with the polar angle and achieving a maximum near 80°, and usually increasing with the decreasing landing energy of electrons. In practice, BSE polar angles approaching 90° can be acquired when immersing the sample in an electric field like in a cathode lens. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2015
Počet záznamů: 1