You
can duplicate the objects involved in a collision effect. For example,
if you make particles collide with a surface, you can duplicate
the particles, surface, and collision effect.
To duplicate the collision effect:
Select the particle object and geometry
involved in the collision.
SelectEdit > Duplicate
Special > to display
the Duplicate Special options window.
In the Duplicate Special options window,
turn on Duplicate Input Graph and click Duplicate
Special.