Gamma Rays as projectile

[logic19]

How can Gamma rays be used as a projectile ?
It need s the nucleus to be extremely unstable.Please give description as well as examples.of such reaction.

[Chi Meson]

How can Gamma rays be used as a projectile ?
In the traditionol sense of "pojectile," they can't. Gamma rays are photons, and do not follow the rules of classical projectile motion. Are you by any chance studying "General Relativity"?

It need s the nucleus to be extremely unstable.
This makes no sense. Try again?

Please give description as well as examples.of such reaction.
You have not mentioned any reaction. Perhaps you mean to use different words?

[bgc]

Perhaps thinking of an x-ray LASER?