Posters - Networking - Exhibition

Wednesday November 09, 2022 from 13:30 to 17:00

Room:

POS-38 The optimal solution for the inhomogeneity of the material irradiated by electron beam and X-ray

Nguyen Anh Tuan, Vietnam

Science and Technical Support
Hanh Nguyen Food One Member Limited Liability Company

Abstract

The optimal solution for the inhomogeneity of the material irradiated by electron beam and X-ray

Nguyen Anh Tuan IV1.

1Faculty of Physics and Engineering Physics, University of Science, Vietnam National University, Ho Chi Minh, Vietnam

Electron linear accelerator with average energy 9.92 ± 0.48 MeV, UELR-10-15S2, was set up and operated at the Research and Development Center for Radiation Technology, Vietnam Atomic Energy Institute, for irradiating foods and medical devices directly without X-ray converter. Inside the homogenous products, the depth-dose curve depends on electron beam energy and product density, and moreover, it also depends on the inhomogeneity of the irradiated material. In this article, the depth-dose distribution is calculated by MCNP simulation code and measured by a film dosimeter inside the inhomogeneous products. The results show that the maximum deviation of the depth-dose curve between inhomogeneous and homogeneous products with the same density is about 20%. So the area density limit for irradiating double sided on the electron beam (9.92 ± 0.48 MeV) is in the range from 6.1 to 9.7 g/cm2 instead of 8.5 g/cm2 in general. In the case of the decreasing area density limit, we propose an irradiation model using X-ray, so we are building new irradiation facility using IBA Rhodotron TT300 duo lines.


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