BRAGG-DIFFRACTION OPTICS IN HIGH-RESOLUTION STRAIN-MEASUREMENTS

Authors
VRANA M LUKAS P MIKULA P KULDA J
Citation
M. Vrana et al., BRAGG-DIFFRACTION OPTICS IN HIGH-RESOLUTION STRAIN-MEASUREMENTS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 338(1), 1994, pp. 125-131
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
338
Issue
1
Year of publication
1994
Pages
125 - 131
Database
ISI
SICI code
0168-9002(1994)338:1<125:BOIHS>2.0.ZU;2-A
Abstract
Using Bragg diffraction optics focusing conditions for a triple-axis s etup equipped with a bent Si single crystal monochromator and analyzer for investigation of stress fields in polycrystalline materials are d erived. Results of experimental tests of such a setup are presented. F urther it is demonstrated that if certain focusing conditions for a be nt monochromator are fulfilled the beam diffracted by a polycrystallin e sample becomes quasi-parallel which enables high resolution measurem ents directly with a PSD without the use of a collimator or a crystal- analyzer. In the three axis setup maximum sensitivity in determination of Delta d/d less than or equal to 10(-4) can be achieved permitting profile-broadening analysis for reasonable sample volumes and counting times.