When bouncing particle off a bouncer, you can generate a second stream of particles. For example, use this technique to give the effect of water or sparks bouncing off an image.
There are two different effects that you can create depending on your bouncer's settings. The following example illustrates the Generator bounce type.
To make bouncing particles generate another particle stream:
If you set the Spread to less than 180, you can also control the rotation of the second particle stream using the Friction field in the Particle Bouncer menu.
The following figure shows the schematic and the result of bouncing particles into another particle stream where the first particle stream continues after bouncing off an image surface. The first particle stream generates spheres and the second particle stream generates quads.