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为满足核物理实验的要求,需要提供能量10~100 keV的离子束。欲获得如此大范围能量可调变的离子束,从离子源直接引出是难以实现的,并且,能量太低时,不利于离子束的传输。因此,现实可行的方案是选择一个固定的引出能量,在靶前采用加减速结构,将离子束减速到10 keV或加速到100 keV,实现离子束能量的调整。
In order to meet the requirements of nuclear physics experiments, it is necessary to provide an ion beam with an energy of 10~100 keV. In order to obtain such a wide range of energy-adjustable ion beams, direct extraction from an ion source is difficult to achieve, and if the energy is too low, it is not conducive to ion beam transmission. Therefore, a feasible solution is to select a fixed extraction energy, adopt acceleration and deceleration structure in front of the target, decelerate the ion beam to 10 keV or accelerate to 100 keV, so that the ion beam energy can be adjusted.