【摘 要】
：
介绍了在线同位素分离器使用激光离子源的重要性、激光离子源原理和相关激光技术,以及热毛细管激光离子源和靶室的结构.在首次在线实验中使用50MeV/u18O+0a1Ta→167Yb(T1/2=1
【机 构】
：
中国科学院近代物理研究所,清华大学现代物理系,McGill大学物理系
论文部分内容阅读
介绍了在线同位素分离器使用激光离子源的重要性、激光离子源原理和相关激光技术,以及热毛细管激光离子源和靶室的结构.在首次在线实验中使用50MeV/u18O+0a1Ta→167Yb(T1/2=17.5m)反应道,实现了加速器、分离器和激光系统的联合运行.通过测量分离后产物的γ谱,确定了分离后的 167Yb的产额,并与从产生截面、束流强度、收集时间和靶厚度计算得到的产生率相比,得到总分离效率约为0.2%.通过有激光与无激光条件下测量的γ谱中 167Yb与 167Lu相应峰下面积比值K得到元素选择性η为3.2.发现了新的 167Yb的长寿命高自旋的同质异能态,分析了提高效率的途径.
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