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 Results for DC.creator="A." AND DC.creator="Huq" in section 2.10.1 of volume H   page 1 of 2 pages.
X-ray powder diffraction
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1, pp. 200-218 [ doi:10.1107/97809553602060000945 ]
... scattering mechanisms of X-rays in the laboratory and at a synchrotron are the same, and apparent differences are usually due ... synchrotron pattern is displaced by 200 intensity units for clarity. A typical laboratory instrument has the Bragg-Brentano reflection geometry, either ... indirectly the result of samples being too coarse to produce a random powder. The word `powder' forms part of the ...

Flat foils
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.4.2.1, pp. 213-215 [ doi:10.1107/97809553602060000945 ]
... reflection measurements. Simply turning the stage by 90° and using a different holder can be sufficient if the optical configuration is ... can induce significant texture, such that the data collected from a film in reflection geometry will not necessarily be identical to those collected in transmission. Should a reproducible pattern independent of geometry be required, then steps ...

Transmission sample holders
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.4.2, pp. 213-218 [ doi:10.1107/97809553602060000945 ]
... to both the foil and capillary transmission techniques is that a small quantity of a powdered sample is usually sufficient. Samples small enough to be ... Data collection in transmission geometry is best done with either a parallel-beam or focusing geometry; the focus should be ...

Reflection sample holders
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.4.1, pp. 211-213 [ doi:10.1107/97809553602060000945 ]
Reflection sample holders 2.10.1.4.1. Reflection sample holders In a laboratory setting these are the most common type of holders - normally for use in a Bragg-Brentano instrument. A wide variety of sample holders for different applications are ...

Holders
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.4, pp. 211-218 [ doi:10.1107/97809553602060000945 ]
Holders 2.10.1.4. Holders 2.10.1.4.1. Reflection sample holders | | In a laboratory setting these are the most common type of holders - normally for use in a Bragg-Brentano instrument. A wide variety of sample holders for different applications are ...

Extinction
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.3.3, pp. 210-211 [ doi:10.1107/97809553602060000945 ]
... the size/shape of the coherently diffracting domains, and is a multiple-scattering phenomenon. Primary extinction occurs when a second diffracting event occurs within a single crystallite. Secondary extinction occurs in mosaic crystals and ...

Microabsorption
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.3.2, p. 210 [ doi:10.1107/97809553602060000945 ]
... phase analysis with powder X-ray diffraction data. Misapplication of a microabsorption correction can degrade accuracy (Scarlett et al., 2002 ). ... be difficult to analyse accurately using any wavelengths available to a laboratory X-ray diffractometer because of microabsorption effects. Brindley (1945 ) published a theoretical correction (model) for microabsorption, but the range for ...

Absorption (surface roughness)
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.3.1, pp. 209-210 [ doi:10.1107/97809553602060000945 ]
... Absorption is an obvious issue when using capillaries in transmission (a convenient calculator is available on the 11-BM web site ... of surface roughness on the intensity compared to that of a bulk copper specimen. Data from Suortti et al. (1972 ). ... in reflection geometry, so care should be taken to produce a sample with a smooth surface and uniform density where ...

Absorption (surface roughness), microabsorption and extinction
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.3, pp. 209-211 [ doi:10.1107/97809553602060000945 ]
... in the section on the choice of sample mounting), where a peak shift and change in profiles can occur. Microabsorption and ... Absorption is an obvious issue when using capillaries in transmission (a convenient calculator is available on the 11-BM web site ... of surface roughness on the intensity compared to that of a bulk copper specimen. Data from Suortti et al. (1972 ) ...

Preferred orientation
Whitfield, P.S., Huq, A. and Kaduk, J.A.  International Tables for Crystallography (2019). Vol. H, Section 2.10.1.2, pp. 206-209 [ doi:10.1107/97809553602060000945 ]
... orientation 2.10.1.2. Preferred orientation Preferred orientation is usually undesirable in a powder diffraction pattern, although sometimes it is the information required ... reflections with respect to others. Reference is commonly made to a preferred-orientation `correction'. Strictly speaking, what is done is ... Järvinen, 1993 ) formalisms. Apparent severe preferred orientation may be a sign of large crystallites, which may result in one ...

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