Icosahedral quasicrystals applied as a harmonic-free crystal analyser

Authors
Capitan, MJ Alvarez, J
Citation
Mj. Capitan et J. Alvarez, Icosahedral quasicrystals applied as a harmonic-free crystal analyser, J APPL CRYS, 33(2), 2000, pp. 888-892
Citations number
20
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF APPLIED CRYSTALLOGRAPHY
ISSN journal
00218898 → ACNP
Volume
33
Issue
2
Year of publication
2000
Part
3
Pages
888 - 892
Database
ISI
SICI code
0021-8898(20000601)33:2<888:IQAAAH>2.0.ZU;2-F
Abstract
The use of quasicrystals as crystal analysers has been studied in monochrom atic X-ray synchrotron radiation applications. The quasiperiodicity of thei r structures gives a theoretical third-harmonic rejection factor of up to 5 x 10(-4) when the icosahedral (20,32) Bragg peak is used. This ratio is co mpared with the intrinsic value for silicon perfect crystals in Bragg confi guration, namely 2 x 10(-2). This rejection factor may be increased for som e well defined configurations, as reported elsewhere for the case of period ic crystals.