You can set Strength of the explosion and Number of peaks.
Also you can select type of explosion between the following:
Burst - the area of an accident has sharp edges;
Blot - the area of an accident has smooth edges;
Splash - this command takes each pixel on the screen and disperses it over the image in the direction from the center to the edges (You can set Density of the image "material").
If you check Freeze button, the deformation will be the same from time to time with the same set of parameters. If you don't check this button, the deformation will be different from time to time.