KORYTÁR, D., C. FERRARI, Petr MIKULÍK, P. VAGOVIČ, E. DOBROČKA, V. ÁČ, P. KONOPKA, A. ERKO and N. ABROSIMOV. Linearly graded GeSi beam-expanding/compressing X-ray monochromator. Journal of Applied Crystallography. 2010, vol. 2010, No 43, p. 176-178. ISSN 0021-8898.
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Basic information
Original name Linearly graded GeSi beam-expanding/compressing X-ray monochromator
Name in Czech Lineárně gradovaný GeSi expandující a komprimující rtg monochromátor
Authors KORYTÁR, D. (703 Slovakia), C. FERRARI (380 Italy), Petr MIKULÍK (203 Czech Republic, guarantor), P. VAGOVIČ (703 Slovakia), E. DOBROČKA (703 Slovakia), V. ÁČ (703 Slovakia), P. KONOPKA (703 Slovakia), A. ERKO (643 Russian Federation) and N. ABROSIMOV (643 Russian Federation).
Edition Journal of Applied Crystallography, 2010, 0021-8898.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10302 Condensed matter physics
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 3.794
RIV identification code RIV/00216224:14310/10:00043221
Organization unit Faculty of Science
UT WoS 000273764900025
Keywords in English X-ray diffraction; X-ray optics; Monochromators
Tags International impact, Reviewed
Changed by Changed by: doc. RNDr. Petr Mikulík, Ph.D., učo 855. Changed: 20/1/2010 10:18.
Abstract
In standard single-crystal V-channel germanium (220) X-ray beam-expanding/compressing monochromators for Cu K[alpha]1 radiation, a total beam expansion/compression of 5 and 10 corresponding to the asymmetry angles of 9deg and 12deg is achieved, respectively. Higher one-dimensional beam expansion/compression is achievable using larger angles of asymmetry at the expense of a decrease in the total intensity. To increase the intensity, a linearly graded Ge-rich GexSi1-x single crystal was used to prepare a monochromator with 15deg asymmetry angles (total expansion/compression factor of 21) for Cu K[alpha]1 radiation. The X-ray diffraction measurements show more than three times higher peak intensity at the output compared with that of a pure Ge monochromator.
Abstract (in Czech)
Ve standardních monokrystalových monochromátorech typu V-kanál z germania (220) dosahují zmenšení či zvětšení svazku faktorem 5 až 10 podle úhlu asymetrie. Vyšších poměrů je možné získat vyššími úhly asymetrie, což ovšem snižuje energii. Lineárně gradovaný GexSi1-x monokrystal je možným řešením. Simulacemi, realizací a měřením jsme získali třikrát větší intenzitu než u standardního Ge monochromátoru.
Links
MSM0021622410, plan (intention)Name: Fyzikální a chemické vlastnosti pokročilých materiálů a struktur
Investor: Ministry of Education, Youth and Sports of the CR, Physical and chemical properties of advanced materials and structures
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