Crystal monochromator with a resolution beyond 10(8)

Citation
Ts. Toellner et al., Crystal monochromator with a resolution beyond 10(8), J SYNCHROTR, 8, 2001, pp. 1082-1086
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF SYNCHROTRON RADIATION
ISSN journal
0909-0495 → ACNP
Volume
8
Year of publication
2001
Part
4
Pages
1082 - 1086
Database
ISI
SICI code
0909-0495(200107)8:<1082:CMWARB>2.0.ZU;2-J
Abstract
Monochromatization with crystal diffraction has been achieved to a resoluti on (lambda/Delta lambda) beyond 10(8). The monchromator is specifically des igned for 23.880 keV synchrotron radiation (lambda = 51.9 pm) for applicati ons involving nuclear resonant scattering from Sn-119. The design uses asym metrically cut silicon (12 12 12) crystal reflections from two single-cryst alline monoliths oriented in a dispersive geometry. A transmitted energy ba ndwidth of 140 +/- 20 mu eV was measured, corresponding to a resolution of 1.7 +/- 10(8). Methods of improving efficiency, wavelength stability and re solution are discussed.