Mass thickness detection and verification for radiation processing products based on X-ray detection technology

Abstract

To quickly obtain the mass thickness and predetermine dose distribution of electron beam irradiated products, a new detection method was developed based on X-ray detection technology. The detection method was developed and optimized using four standard modules (aluminum sheet, aluminum ladder, polymethyl methacrylate sheet, and polymethyl methacrylate ladder). The accuracy and applicability of the method was verified using uniform materials (water and millet) with varying thickness and two practical materials (potato starch and frozen shrimp). For standard module and homogeneous materials, the results indicated that the relative error of the measurement and standard values was within the range of -5% to 5% for a value of mass thickness greater than 1.0 g/cm2, which indicated the reliability of the mass thickness detection method. The use of potato starch and frozen shrimps proved that the method could accurately predict the mass thickness distribution of heterogeneous products; furthermore, the method was instructive for the measurement of the actual dose distribution and radiation process design of the product.

Keywords

• electron beam radiation processing
• mass thickness
• electron beam accelerator
• x-ray detection