Recovery of the Surface Density of Radionuclide Contamination of Soil from Aerogamma Survey Data


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Abstract

The recovery of non-uniform surface contamination density from measurements of instrumental spectra performed by the airborne survey method is examined. An algorithm based on Tikhonov’s method of regularization is proposed for solving the inverse problem. The results of testing the chosen algorithm on model problems of recovering the 137Cs contamination of a soil surface in the form of spots with different activity and size are presented. The influence of the regularization parameter on the recovery error is analyzed, and the optimal values of the regularization parameter are obtained.

About the authors

D. V. Aron

Nuclear Safety Institute, Russian Academy of Sciences (IBRAE RAS)

Author for correspondence.
Email: sham@ibrae.ac.ru
Russian Federation, Moscow

S. L. Gavrilov

Nuclear Safety Institute, Russian Academy of Sciences (IBRAE RAS)

Email: sham@ibrae.ac.ru
Russian Federation, Moscow

A. A. Kiselev

Nuclear Safety Institute, Russian Academy of Sciences (IBRAE RAS)

Email: sham@ibrae.ac.ru
Russian Federation, Moscow

A. M. Shvedov

Nuclear Safety Institute, Russian Academy of Sciences (IBRAE RAS)

Email: sham@ibrae.ac.ru
Russian Federation, Moscow

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