Application of Adjoint Difference and Surface Integral Methods to Selected Deep-Penetration Radiation Transport Problems
TENNESSEE UNIV KNOXVILLE DEPT OF NUCLEAR ENGINEERING
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A comparison of the Surface Integral and Adjoint Difference tecchniques are presented in the report. The comparison is made from a brief theoretical development of each method and by the results obtained using each method for several radiation transport problems of the class of a target located in air or air-ground interface far removed from a point neutron source. Most targets considered thus far do not contain fissile materials however, it is demonstrated that the calculational tools employed in this study are applicable to such targets. The theoretical considerations lead to the conclusion that an error is associated with the Surface Integral technique, but this error will probably be small for the class of problems considered herein. In contrast to this, the Adjoint Difference technique is exact. The numerical results presented agree with these predictions.
- Nuclear Radiation Shielding, Protection and Safety
- Radioactivity, Radioactive Wastes and Fission Products