0428同步年報-2021-全

Facility Status 105 Fig. 6 : Photograph of the sample preparation system and a recorded LEED pattern from a clean Cu(100) surface at 80 eV. Fig. 5 : Working geometry (left) and its photograph after installation (January 2022) of the PRINS station at TPS 27A2 . and an imaging spin filter. After the microscope arrived at the NSRRC in late October 2021, an effort to assemble and install it was initiated immediately. Figure 5 is a recent photograph of the microscope with a cartoon showing its working principle and chamber orientation. We expect the off-line commissioning with a UV light source to begin in the first half of 2022, followed by the commissioning with synchrotron light at the end of the same year. Because photoelectron microscopy is a surface-sensitive technique, the 27A2 station includes a UHV sample preparation system designed in-house to work with the microscope. The preparation system consists of a load- lock chamber and a standard surface science chamber capable of conducting low-energy electron diffraction (LEED), Auger electron spectroscopy, ion-sputtering, sample flash annealing, and thin-film deposition. The preparation system was designed in 2020, constructed, and tested in 2021 (see Fig. 6 ). Figure 6 (bottom) shows a LEED pattern taken from a clean Cu(100) single crystal at electron energy 80 eV. The sample preparation system will be connected to the microscope system to enable experiments in situ . (Reported by Yi-Jr Su, Hung-Wei Shiu, Tzu-Hung Chuang, and Der-Hsin Wei) References 1. K. Y. Kao, C. Y. Hua, H. S. Fung, S. W. Lin, H. Y. Chao, S. C. Yeh, S. C. Chun, D. J. Huang, C. T. Chen, SRI Conf. Proc. 2054 , 060005 (2019). 2. S. W. Lin, D. J. Wang, H. W. Fu, H. M. Tsai, C. Y. Hua, C. Y. Kuo, M. Y. Hsu, K. Y. Kao, G. C. Yin, H. S. Fung, S. Y. Perng, C. F. Chang, Rev. Sci. Instrum. 90 , 021716 (2019).