Explosion effect with particle emitter

I want to make an explosion effect with a particle emiteer: The particles should be released all at once; not even that many, 10 or 20 say. Thus no continues release of particles.

Think of the explosion of a new years rocket.

All the examples unfortunately release particles continuesly.

It’s like game objects/particle emitter/emit from shape but add on: false to the emitter config.

It was the ‘explode’ function that I’ve missed.