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Neutron Depth Profiling

This text was adapted for RID from the NIST website on Cold Neutron Depth Profiling. The original author is Greg Downing. Principle A…

Granular matter

Extracting micro-structural and rotational information in granular materials such as: sand-piles, coffee beans, planetary rings, powders…

Semi-quantum mechanical explanation

The incoming beam has a polarisation perpendicular to the magnetic field in the precession regions. In the field one can consider the wave…

Gratings

In the figure we show SESANS measurements on a silicon line-grating with a period of 12 mm, a ridge height of 40 mm and a ridge width of 4…

Micro-emulsion (cream cheese)

Systems of practical relevance to the food industry are often hard to investigate non-invasively. This is caused by the fact that most food…

Colloidal phase diagram

Suspensions of hard-sphere colloids are characterised in three phases . The sample consists of sterically stabilised silica spheres with a…

Milk aggregation

The main components of milk are caseine micelles that are polydisperse protein particles of up to several hundred nm in size. This can be…

SESANS by modulation

With minor modification of the SESANS -instrument we obtained a modulated beam. This was achieved by carefully tuning the strength of the…

Positron annihilation

The positron facilities The Variable Energy Positron beam facility ( VEP ): a mono-energetic, magnetically guided positron beam (10^5…