PEPO: A program for the calculation of the reflectivity of cylindrically bent Laue crystal monochromators

Journal Article · Wed Feb 01 00:00:00 EST 1995 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1145712· OSTI ID:6594316

Schulze, C ^[1]; Chapman, D ^[2]

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1. European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex (France)
2. National Synchrotron Light Source at BNL, P.O. Box 5000, Upton, New York 11973-5000 (United States)

PEPO is a program for the calculation of the reflection profiles of cylindrically bent Laue crystal monochromators based on the Penning and Polder theory of x-ray diffraction in slightly strained crystals. The creation of new wave fields as well as an anisotropic model for the crystal deformation has been added to the original theory. The program runs under the computing environment IDL and is widget based. The calculation of perfect flat crystal reflectivity curves in Bragg and Laue geometry using the formulas presented by Zachariasen is included. The agreement with experimental results is excellent, allowing the derivation of focal properties from the calculated reflectivity curves.

• OSTI ID: 6594316
• Journal Information: Review of Scientific Instruments; (United States), Vol. 66:2; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
CRYSTALS
X-RAY DIFFRACTION
MONOCHROMATORS
REFLECTIVITY
ANISOTROPY
DEFORMATION
P CODES
COHERENT SCATTERING
COMPUTER CODES
DIFFRACTION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SCATTERING
SURFACE PROPERTIES
440600* - Optical Instrumentation- (1990-)