Approximate calculational method for nuclear heating

A simplified but approximate method for the calculation of nuclear heating is described. Results using this method are compared with those of more rigorous calculations. The computational effort required is significantly reduced, and an accuracy generally better than +-20 percent can be achieved provided reasonable estimates of gamma-ray production are used. It would appear that the gamma-ray absorption coefficients used here are too low as a result of assuming average gamma-ray energies that are too high. As experience is gained with use of the method, greater accuracy should result from improved assumptions regarding both gamma-ray production and average gamma-ray energies