Diverged Beam

2-2-220

A form of fan beam (2-1-090) produced by diverging a pencil beam (2-1-095) in a plane containing the axis of the beam (usually either horizontally or vertically) so that the angle of divergence of the diverged beam is greater than that of the original beam.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English