MULTI-PARAMETER INTERPOLATION OF BETA RADIATION DOSE RATES USING RADIAL BASIS FUNCTIONS.

Area of Science:

• Radiation Dosimetry
• Monte Carlo Simulations
• Applied Mathematics

Background:

• Accurate dose rate calculations are crucial for radiation protection.
• Monte Carlo simulations provide detailed dose data but are computationally intensive.
• Interpolation is necessary to bridge simulation data gaps for practical applications.

Purpose of the Study:

• To address the interpolation problem for dose rate per activity from beta-emitting radionuclides.
• To develop and present a method for interpolating operational and organ doses.
• To introduce a freely available software tool for accessing interpolated dose values.

Main Methods:

• Utilized Monte Carlo simulations for dose rate calculations under various source conditions (diameter, radionuclide, distance).
• Employed radial basis function thin-plate spline interpolation to estimate dose values between simulation points.
• Developed the BetaDosim software application to implement the interpolation method.

Main Results:

• Successfully implemented a thin-plate spline interpolation method for beta radiation dose rates.
• The BetaDosim software provides interpolated values for operational quantities (Hp(0.07), Hp(3), Hp(10)) and organ doses (Hskin, Hlens).
• The interpolation method allows for dose evaluation at parameter values not directly simulated.

Conclusions:

• The developed interpolation method effectively solves the problem of estimating dose rates for beta-emitting radionuclides.
• The BetaDosim software offers a practical and accessible tool for radiation protection professionals.
• Interpolated dose data enhances the usability of Monte Carlo simulation results in real-world scenarios.