Morn's mother had been killed by a super-light proton beam.

There are many advantages to using a proton beam over an electron beam.

At two places of the ring the electron and the proton beam could be brought to collision.

They diverted a portion of the proton beams to create antiprotons.

And because Gutbuster needed power to maneuver, she couldn't use her proton beam again.

She was pointing to the lever that would release the proton beam.

It was still dark-the matter-antimatter proton beams had not been brought into contact.

The $200 million project, which focuses on using proton beams to shrink tumors, is under construction.

Conversely, the magnetic field on Atlas wraps like tape around the proton beam.