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放射性核束的出现为核物理及核天体物理前沿领域的实验研究注入了新的活力。为有效利用流强相当较弱的放射性核束,不少新方法、新技术应运而生,弹性共振散射的厚靶实验方法就是一例。该方法使用较厚的固体或气体反应靶,使次级束的能量全部或部分地损失在靶中,在反应靶的下游,通过测量出射的较轻的粒子,可以1次得到较大能量范围的激发函数。
The emergence of radioactive nuclear beam has injected new vitality into the experimental research in the field of nuclear physics and nuclear astrophysics. In order to effectively use the relatively weak flow of radioactive nuclear beam, many new methods and new technologies emerge as the times require, and the experimental method of elastic resonance scattering thick target is an example. The method uses a thicker solid or gas reaction target, causing the energy of the secondary beam to be lost entirely or partially in the target. A larger energy range can be obtained once by measuring the lighter particles emitted downstream of the target The excitation function.