Compton Scattering Application 2

 

  
 Compton Scatter Densitometer (CSD)

The applications of CSD:
1. The electron density in certain volume of an object can be obtained.
2. A collimated detector is focused on a thin incident beam to measure the density of a small-volume element, and derive the physical density distribution, the element number or other relative information about an object.
3. The defects such as flaws, impurity or bubbles can be detected on the object.

The advantages of CSD:
1. Compton scattering can give a higher yield of photon counts and can be applied to scattering at conveniently large angles.
2. By scanning the sample, it yields 3-dimessional (3D) information about the sample without computational reconstruction.
3. The detected contrast is larger than in transmission imaging, because changes are seen against a much smaller background signal.
4. It can be used in some applications where geometry constraints make transmission imaging difficult.