| Time：1111012 (Wed.) 14:20~16:20 Speaker：Prof. 林碧軒(Bi-Hsuan Lin ) 國家同步輻射研究中心實驗設施組X光影像小組/X-ray Imaging Group, Experimental Facility Division, National Synchrotron Radiation Research Center Title：Capabilities of Taiwan Photon Source 23A X-ray Nanoprobe Abstract：The multifunctional hard X-ray nanoprobe at Taiwan Photon Source (TPS) 23A exhibits the excellent ability to characterize the X-ray absorption (XAS), X-ray fluorescence (XRF), X-ray excited optical luminescence (XEOL) as well as the time-resolved XEOL. The advantages of the TPS 23A beamline include (i) a nano-focused X-ray beam (<60 nm) with excellent spatial resolution and (ii) a streak camera that can simultaneously record the XEOL spectrum and decay lifetime. Especially, using an X-ray nanobeam operating in the hybrid bunch mode will provide not only a sufficiently high peak power density but also high-quality temporal domain (~ 200 ns) measurements for studying the luminescence dynamics of materials. In addition, the X-ray fluorescence (XRF) of TPS 23A also can provide the visualization methods for the characterization of valence states in phosphor materials, such as Eu-doped BaAl2O4. XRF mapping not only gives information on the elemental distributions but also clearly reveals the valence state distributions of the Eu2+ and Eu3+ ions. The detail experimental results and the current functions of the nanoprobe beamline will be reported. Place：S101, Gongguan Campus, NTNU |
