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

LOW ENERGY ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS

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

HU Bu-Rong，

WU Jie-Feng，

HAN Wei，

WANG Xu-Fei，

WU Li-Jun，

YU Zeng-Liang

Nuclear Science and Techniques

Vol.16, No.2

pp.102-107

Published in print 01 Apr 2005

CLC：TL929.Q691.5

31600

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 ourα-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.

Adjustable α-particle irradiator241Am α-radioactive sourceBystander effects

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