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Explore the variance of Q resolution with slit geometry and its application to a specific case. Learn how slits are used to enhance sample flux and how resolution can be adjusted in different directions. Understand the smearing effect of data acquired with slit geometry.
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Chapter 59 – SANS RESOLUTION WITH SLIT GEOMETRY 59:1. VARIANCE OF THE Q RESOLUTION 59:2. MINIMUM Q WITH SLIT GEOMETRY 59:3. APPLICATION TO A SPECIFIC CASE
59:1. VARIANCE OF THE Q RESOLUTION Wavelength spread geometry In the horizontal direction With slit apertures: With circular apertures: In the vertical direction With slit apertures: gravity
59:2. MINIMUM Q WITH SLIT GEOMETRY With slit apertures: With circular apertures:
COMMENTS -- Slits are used in order to enhance the flux on sample. -- Resolution can be tightened in one (usually horizontal) direction but opened up in the other direction. -- Data acquired with slit geometry are “slit” smeared.