for anyone that could and would answer:
How could the antimatter be stored or handled for use?
Given that these are positrons, would it be possible to contain them is a ceramic container, amongst Hydrogen-1, or both?
I found the upthread PET scan remark interesting, but that works by measuring the decaying atoms as they travel through the blood. I don't see a way of using the positrons from the laser in a PET scan. Something like a CAT scan (x-rays) I would understand
As an off-sub-thread follow-up, most hospitals using short half-life material are connected to a cyclotron lab via a pneumatic transport tube (the same kind they have at my local Costco)