An analytical approach to gamma-ray self-shielding effects for radioactive bodies encountered nuclear decommissioning scenarios

作者：Gamage K A A^*; Joyce M J

来源：Applied Radiation and Isotopes, 2011, 69(10): 1521-1532.

DOI：10.1016/j.apradiso.2011.06.010

• Self-shielding
• Self-absorption
• Self-attenuation
• Decommissioning

A novel analytical approach is described that accounts for self-shielding of gamma radiation in decommissioning scenarios. The approach is developed with plutonium-239, cobalt-60 and caesium-137 as examples; stainless steel and concrete have been chosen as the media for cobalt-60 and caesium-137, respectively. The analytical methods have been compared MCNPX 2.6.0 simulations. A simple, linear correction factor relates the analytical results and the simulated estimates. This has the potential to greatly simplify the estimation of self-shielding effects in decommissioning activities.

• 出版日期2011-10