Online-Ressource
International Union of Crystallography (IUCr)
;
1989
In:
Journal of Applied Crystallography Vol. 22, No. 2 ( 1989-04-01), p. 84-86
In:
Journal of Applied Crystallography, International Union of Crystallography (IUCr), Vol. 22, No. 2 ( 1989-04-01), p. 84-86
Kurzfassung:
The use of asymmetric Bragg reflection offers the possibility of separating wavelength bands belonging to a fundamental wavelength and its higher harmonics from each other. This is shown in an example calculated for X-rays. Especially for well collimated synchrotron radiation the subsequent use of symmetric and asymmetric reflections in a double-crystal arrangement results in different large shifts of the reflected peaks. This kind of synchrotron monochromator offers two important improvements with respect to other similar monochromator systems: ( a ) it is tunable to the harmonics of a fundamental wavelength in a large range, e.g. from 0.4 to 2.7 Å; and ( b ) it works harmonic free for each wavelength band on top of the Darwin curve.
Materialart:
Online-Ressource
ISSN:
0021-8898
DOI:
10.1107/S0021889888010908
Sprache:
Unbekannt
Verlag:
International Union of Crystallography (IUCr)
Publikationsdatum:
1989
ZDB Id:
2020879-0
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