The Nonresonant Charge Exchange subnode is available from the context menu (right-click the
Collisions parent node) or from the
Physics toolbar,
Attributes menu. The
Nonresonant Charge Exchange subnode causes particles to undergo charge exchange reactions with a background gas. Unlike the
Resonant Charge Exchange node, it is possible for the particle that undergoes the collision and the ionized and neutralized particles that result from it to be three different species. The ionized particle, neutralized particle, or both ionized and neutralized particles can be released.
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), enter a value for the
Scattering angle in the center of mass system χ (SI unit: rad), and to select one of the following from the
Species to release list:
Ion (the default),
Neutral particle, or
Ion and neutral particle. There is also a checkbox
Change primary ion species which is selected by the default. This checkbox can be unselected when the ion species as a result of collision have same properties as primary particles. When the checkbox is cleared, the primary particles are reused instead of releasing new secondary particles.
This section is available when Neutral particle or
Ion and neutral particle is selected from the
Species to release list. Select an option from the
Neutral properties list, which may be any
Particle Properties node that has been added to the physics interface.
This section is available when Ion or
Ion and neutral particle is selected from the
Species to release list and
Change primary ion species checkbox is selected. Select an option from the
Ion properties list, which may be any
Particle Properties node that has been added to the physics interface.