Characterization of a high activity industrial 60Co irradiator for controlled low dose applications at Da Nang irradiation facility

IF 2.1 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2026-03-01 Epub Date: 2025-11-27 DOI:10.1016/j.apradiso.2025.112333

Hoang Thanh-Phi Hung, Cao Van Chung

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引用次数: 0

Abstract

High-activity ⁶⁰Co irradiators can be adapted for low-dose research without hardware modification. We characterized the Da Nang Irradiation Facility (VINAGA1; 151 kCi ≈ 5.6 PBq) using MCNP6.3 and validated predictions with calibrated Fricke dosimetry across 20–200 Gy. A quasi-uniform plane was established at z = 80 cm above the conveyor base, with a dose-uniformity ratio (DUR) of 1.20–1.46. For most positions, the mean absolute deviation between simulation and measurement was <10 %; one boundary location exhibited 25.7 % due to steep local gradients and millimeter-scale placement sensitivity. Doses used two-sided exposures totaling 7.5–48 min per side, scaled to dose. Within the 60–120 Gy validation window, the mean absolute deviation was 8 % with a −4.9 % bias versus prescription. These results show that a Category-IV panoramic irradiator provides uniform low-dose fields suitable for mutation breeding, phytosanitary treatments, and materials research, offering a practical, cost-effective path to repurpose industrial ⁶⁰Co facilities for controlled low-dose Research and Development (R&D), validated for accuracy and reproducibility, with transparent limits and scope.

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岘港辐照设施控制低剂量应用的高活性工业60Co辐照器的特性。

高活性60Co辐照器可适用于低剂量研究，无需硬件修改。我们使用MCNP6.3对岘港辐照设施（VINAGA1; 151 kCi≈5.6 PBq）进行了表征，并使用校准的Fricke剂量学在20-200 Gy范围内验证了预测。在输送机基座上方z = 80 cm处建立准均匀平面，剂量均匀比（DUR）为1.20 ~ 1.46。对于大多数职位，模拟和测量之间的平均绝对偏差为60Co，用于受控低剂量研究和开发（R&D），验证了准确性和可重复性，具有透明的限制和范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.