Coincidences & Backscattering

Important! To enable coincidence or backscattering calculations, your nuclide library must contain additional data about the nuclides. For this purpose a library called CoincidenceLibrary.xml is supplied with your AASI. Please note that the default library NuclideLibrary.xml does not contain the coincidence information! Use the coincidence data browser to verify that the nuclides you have selected into the simulation have this additional library data.

To include coincidence effects in your simulations use the following controls:

The 'Calculate coincidences' checkbox

This checkbox enables or disables the calculation of coincidence effects in the simulation. When selected the coincidence effects will be included.

The 'Include backingplate in calculations' checkbox

This checkbox enables or disables the backscattering effects in the simulation. When selected the backscattering effects will be included.

The backingplate material list

The material of the backingplate has an impact on the backscattering effect. Use this list to choose the element the backingplate is composed of.

The backingplate density field

Use this field to specify the density of the backingplate material. Values in this field are required to be in the range (0, 23)

The backingplate thickness field

Use this field to specify the thickness of the backingplate in micrometers. The values are required to be > 0.
The backingplate thickness fluctuations field

Use this field to specify thickness fluctuations in the backingplate. The values are absolute. The thickness fluctuations are considered to be unifomly distributed. Values in this field are required to be > 0.
The shielding model list

This lets you choose which shielding model is used in the calculations. 
The 'parallel beam emission' checkbox

When this checkbox is ticked a beam parallel to the detector will be used in the calculations. If you want to view the electron tracking in the detector you must have this option enabled.
The 'Linear deposition model in the dead layer' checkbox

When this checkbox is ticked a beam parallel to the detector will be used in the calculations.
The 'Track alpha particles' checkbox

This checkbox enables or disables the tracking of alpha particles during the simulation. When selected, the paths of the alpha particles are tracked and written to a file.
The integration step field

In this field you may specify the length of the step used in the numeric integration of the