WHAT KIND OF BEAM TO USE WANT? There are two types of particle beams; the one used depends on what the weapon is used for, either exoatmospheric or endoatmospheric. Exoatmospheric are in conditions where there is nothing, like space or a vacuum tube. Endoatmospheric are in conditions where an atmosphere exists, like on Earth or orbiting Earth. For exoatmospheric use the beam that exits the weapon must be neutral, have no charge, to prevent beam divergence. Beam divergence happens when a beam of charged particles increases in diameter as it travels through empty space. This is not good. If the...