Abstract:
The multifunctional hard X-ray nanoprobe at the Taiwan Photon Source (TPS) 23A demonstrates exceptional capabilities in characterizing X-ray fluorescence (XRF), X-ray absorption spectroscopy (XAS), X-ray excited optical luminescence (XEOL), time-resolved XEOL (TR-XEOL), and Hanbury-Brown and Twiss (HB-T) interferometer. The hybrid bunch mode of the TPS not only provides a sufficiently high peak power density for experiments at each beamline but also permits high quality temporal domain (~ 200 ns) measurements for investigating luminescence dynamics.[1] The elemental distributions and valence states of rare-earth ions can be effectively measured using XRF and XAS, respectively. XEOL and TR-XEOL serve as excellent tools for investigating the emission properties and dynamic luminescence of luminescent materials. Notably, we have successfully synchronized the HB-T interferometer with the single-bunch operation of the TPS 23A beamline, enabling us to study the bunching and anti-bunching behaviors of emission light excited by X-ray, which is crucial for single-photon sources in quantum technology. Our recent works [2-4] have shown that the X-ray nanoprobe not only provides high spatial resolution but also delivers high peak power density, allowing for the creation of color centers and zero-phonon lines (ZPLs) in samples through X-ray irradiation. Further details regarding the capabilities of this beamline will be reported.
Keywords – XRF, XAS, XEOL, TR-XEOL