CURVED CRYSTAL OPTICS AND THE RESOLUTION FORMALISM - PROGRAMS AND OPTIMIZATION PROCEDURES

Authors
POPOVICI M YELON WB BERLINER R STOICA AD IONITA I LAW R
Citation
M. Popovici et al., CURVED CRYSTAL OPTICS AND THE RESOLUTION FORMALISM - PROGRAMS AND OPTIMIZATION PROCEDURES, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 338(1), 1994, pp. 99-110
Citations number
57
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
99 - 110
Database
ISI
SICI code
0168-9002(1994)338:1<99:CCOATR>2.0.ZU;2-X
Abstract
The problem of computing the neutron optics of curved-crystal spectrom eters is reviewed. The conditions of focusing in scattering and the li mitations to achievable resolutions are discussed. Experience with pro grams for resolution-intensity optimization is presented. Computationa l examples are given of high resolution configurations with bent cryst als and open beams, showing significant intensity gain over convention al techniques. Quasi-elastic scattering measurements at energy transfe r resolutions below 10 mu eV are shown to be feasible at high luminosi ty. Curved monochromators for high resolution neutron powder diffracti on, combining the beam focusing onto sample with focusing in scatterin g, are also discussed.