Rotatable high-resolution ARPES system for tunable linear-polarization geometry.
Rotatable high-resolution ARPES system for tunable linear-polarization geometry.
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DOI：
10.1107/s1600577517008037
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发表时间：
2017-07-01
影响因子：
2.5
通讯作者：
Taniguchi M
中科院分区：
文献类型：
--
作者：
Iwasawa H;Shimada K;Schwier EF;Zheng M;Kojima Y;Hayashi H;Jiang J;Higashiguchi M;Aiura Y;Namatame H;Taniguchi M
介绍了广岛同步辐射中心BL-1线波荡器光束线上的可旋转高分辨角分辨光电子能谱系统。在广岛同步辐射中心的直线波荡器光束线（BL-1）上研制了一套可旋转的高分辨角分辨光电子能谱（ARPES）系统。通过旋转整个ARPES测量系统，光电子探测平面可以连续地从平行于线偏振波荡器辐射的电场矢量变为垂直于线偏振波荡器辐射的电场矢量。这种偏振可调谐性使我们能够识别相对于镜面的初始电子态的对称性，并选择性地观察电子态的基础上的偶极选择规则在光电发射过程中。介绍了可旋转高分辨率ARPES系统的技术指标及其性能，并给出了一些有代表性的实验结果。
A rotatable high-resolution angle-resolved photoemission spectroscopy (ARPES) system that utilizes tunable linear-polarization geometries on the linear undulator beamline BL-1 at Hiroshima Synchrotron Radiation Center is described. A rotatable high-resolution angle-resolved photoemission spectroscopy (ARPES) system has been developed to utilize tunable linear-polarization geometries on the linear undulator beamline (BL-1) at Hiroshima Synchrotron Radiation Center. By rotating the whole ARPES measurement system, the photoelectron detection plane can be continuously changed from parallel to normal against the electric field vector of linearly polarized undulator radiation. This polarization tunability enables us to identify the symmetry of the initial electronic states with respect to the mirror planes, and to selectively observe the electronic states based on the dipole selection rule in the photoemission process. Specifications of the rotatable high-resolution ARPES system are described, as well as its capabilities with some representative experimental results.