Development of a dose-adjustable α-particle irradiation facility for radiobiological studies

Bystander effects induced by low-dose or low dose-rate radiation have put a great challenge to the traditional model for radiation protection. In order to get a better assessment of the adverse effects of radiation, especially the low-dose radiation risk in environment, a radioactive irradiation fac...

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Published in:Nuclear science and techniques 2005, Vol.16 (2), p.102-107
Main Author: HUBu-Rong WUJie-Feng HANWei WANGXu-Fei WULi-Jun YUZeng-Liang
Format: Article
Language:English
Subjects:
Bystander效应
α-粒子辐射
低频辐射源
放射性防护
调节方法
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description Bystander effects induced by low-dose or low dose-rate radiation have put a great challenge to the traditional model for radiation protection. In order to get a better assessment of the adverse effects of radiation, especially the low-dose radiation risk in environment, a radioactive irradiation facility, by which the dose and dose-rate to the biological targets can be controlled by rotating the sample bracket and changing the space between the radioactive source and the targets, was developed. The energy of our α-radioactive source (^241Am) is measured averagely 3.5 MeV at the position of the irradiated sample. The dose rate was measured by using a silicon surface barrier detector and a CR39 particle track detector. A dose rate ranging from 0.045 cGy/s to 1.07 cGy/s can be obtained by changing the space length from the radioactive source to the sample dish.
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subjects Bystander效应
α-粒子辐射
低频辐射源
放射性防护
调节方法
title Development of a dose-adjustable α-particle irradiation facility for radiobiological studies
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