Antimatter

ANTIMATTER;
I have some thoughts. How can antimatter (Positrons) be created using the weak force stimulated by electromagnetism?. I will investigate the creation of protons from neutrons via the weak force. Has this been accomplished before? If so maybe the PET Imaging is a possible source of information about
transmutation of matter via the weak force using electromagnetism and thus the production of antimatter.

What are your thoughts?

Just my thinking