DESIGN OF MICROFOCUSING BENT-CRYSTAL DOUBLE MONOCHROMATORS

Authors
POPOVICI M YELON WB
Citation
M. Popovici et Wb. Yelon, DESIGN OF MICROFOCUSING BENT-CRYSTAL DOUBLE MONOCHROMATORS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 338(1), 1994, pp. 132-135
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
132 - 135
Database
ISI
SICI code
0168-9002(1994)338:1<132:DOMBDM>2.0.ZU;2-Q
Abstract
Design relations are given for double bent-crystal monochromators ensu ring both spatial microfocusing and focusing in reciprocal space in po wder diffraction. The choice of crystals for monochromators for microf ocus stress scanning in steels is discussed. Design computations for a n instrument at the Missouri University Research Reactor (MURR, therma l neutron flux 10(14)n/cm(2)s) with small-mosaic Cu(200) crystals are presented. The spot size can be brought down to 2.5x4mm, with a peak f lux at focus approaching 10(8)ncm(2)s.