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范德格拉夫(Van de Graaff)电子靜电加速器是研究輻射化学的一种主要輻射源,它的能量高,其电子能量及撞击靶子后发射出的X射綫能量达2.5—3.5兆电子伏,这是其他輻射源所不及的。例如X射綫机发出的X射綫最高能量为400千电子伏,Co~(60)放出的射綫平均能量为1.2兆电子伏。电子靜电加速器的剂量率也特别大,它发射的快速电子的剂量率甚至可达10~8伦/秒,远远超过其它輻射源。由于它具有上述特点,并且其剂量率可以控制,防护也比較
Van de Graaff electron electrostatic accelerator is to study a major radiation source of radiation, its high energy, the electron energy and the impact of the target emitted X-ray energy of 2.5-3.5 MeV, This is beyond the reach of other radiation sources. For example, the maximum energy of X-ray emitted by an X-ray machine is 400 keV and the average emission energy of Co ~ (60) is 1.2 MeV. Electrostatic accelerator dose rate is also particularly large, it emits fast electron dose rate even up to 10 ~ 8 Lun / s, far more than other radiation sources. Because it has these characteristics, and its dose rate can be controlled, protection is also compared