BL09XU: an advanced hard X-ray photoelectron spectroscopy beamline of SPring-8

The BL09XU beamline of SPring-8 has been reorganized into a beamline dedicated for hard X-ray photoelectron spectroscopy (HAXPES) to provide advanced capabilities with upgraded optical instruments. The beamline has two HAXPES analyzers to cover a wide range of applications. Two sets of double channel-cut crystal monochromators with the Si(220) and (311) reflections were installed to perform resonant HAXPES analyses with a total energy resolution of less than 300   meV over a wide energy range (4.9 – 12   keV) while achieving a fixed-exit condition. A double-crystal X-ray phase retarder using diamond crystals controls the polarization state with a high degree of polarization over 0.9 in the wide energy range 5.9 – 9.5   keV. Each HAXPES analyzer is equipped with a focusing mirror to provide a high-flux microbeam. The design and performance of the upgraded instruments are presented.

Source: Journal of Synchrotron Radiation - August 23, 2023 Category: Physics Authors: Yasui, A. Takagi, Y. Osaka, T. Senba, Y. Yamazaki, H. Koyama, T. Yumoto, H. Ohashi, H. Motomura, K. Nakajima, K. Sugahara, M. Kawamura, N. Tamasaku, K. Tamenori, Y. Yabashi, M. Tags: hard X-ray photoelectron spectroscopy HAXPES beamlines X-ray optics high-flux microbeams double-crystal X-ray phase retarders Source Type: research