Page 545 - Radiation Safety

Nuclear Gauging System

▪ Type and energy of radiation is determined by the material to be processed:

• Low energy for low density; or

• Thin layer materials and vice-versa.

▪ The most commonly used gamma sources in transmission and back-scattering gauge are:

• Am-241 for low energy;

• Cs-137 for medium energy; and

• Co-60 for high energy.

▪ The most commonly used beta sources are:

• Ni-67 and Pm-147 for low energy;

• Kr-85 for medium energy; and

• Sr-90 and Ru-106 for high energy.