The Ionization subnode is available from the context menu (right-click the
Collisions parent node) or from the
Physics toolbar,
Attributes menu. The
Ionization subnode causes particles to ionize background gas molecules, releasing secondary electrons into the simulation. Optionally, the ionized background gas molecule can also be released. Typically, the primary particles subjected to this collision type are electrons and the ionized particle is taken from the background gas.
See Elastic for information about the
Collision Statistics and
New Value of Auxiliary Dependent Variables sections.
These settings are the same as for the Elastic subnode with additional options to enter a value for the
Energy loss ΔE (SI unit: J) and to specify which species to release during a collision. You may select or clear any of the following check boxes:
This section is shown when either the Release primary electron check box or the
Release secondary electron check box is selected. Select an option from the
Electron properties list, which may be any
Particle Properties node that has been added to the physics interface.
This section is available when the Release ionized particle check box is selected. Select an option from the
Ion properties list, which can be any
Particle Properties node that has been added to the physics interface.