iodine_decay.mac

# Definition of the radiation field
# by means of the General Particle Source
# http://reat.space.qinetiq.com/gps/
/gps/particle ion 
/gps/ion 53 125 53 0.
/gps/energy 0. keV
/gps/pos/type Volume
/gps/pos/shape Cylinder
/gps/pos/radius 0.30 mm
/gps/pos/halfz 1.75 mm
/gps/pos/centre 0. 0. 0. mm