I'm no expert in particle physics, I only know some of the basics, though I do plan on going into this field for a PhD in the future, which will probably take another year before I begin it... Would a beam of antimatter particles, either made up of only 1 type of particle, or a mix of particles, explode instantly the second they were created? Like if there was a way to use use antiparticles as weapons, would it even be possible except in like a bomb form? If antiparticles instantly release a ton of energy when coming in contact with the respective normal particle, would a beam, or a gun that shoots such a beam, blow up instantly upon firing? I can understand about making a bomb if we could somehow utilize them in a large enough amount... but what about beams? I know this is basically Science Fiction at the moment, but theoretically what are the issues with such a device? I'm just posting this because I'm curious on how they would behave in the above described manner. Post any potential theoretical models you might have in mind also, I am very curious about these things because they are interesting to think about, since sometime in the future it may be possible.