# X-ray absorption spectroscopy of Ce2O3 + and Ce2O5 + near Ce M-edge

Tetsuichiro Hayakawa, Kazuhiro Egashira, Masashi Arakawa, Tomonori Ito, Shun Sarugaku, Kota Ando, Akira Terasaki

7 被引用数 (Scopus)

## 抄録

X-ray absorption spectroscopy (XAS) of size-selected free cerium-oxide cluster ions has been carried out by employing an ion trap. X-ray absorption spectra of Ce2O3+ and Ce2O5+ were obtained in the energy range of the Ce M-edge. The spectra consisted of two prominent peaks corresponding to Ce M5- and M4- white line peaks. The photon energies of the peaks showed that the charge state of Ce in Ce2O3+ was comparable with a formal valence number. On the other hand, the estimated charge state of Ce in Ce2O5+ was much smaller than a formal valence number, which was consistently understood by assuming that Ce2O5+ has a Ce2O3-O2 configuration with a molecular O2 adsorbed. It was thus demonstrated that an ion trap facilitates XAS measurement for determining charge states of atoms in a free cluster.

本文言語 英語 075101 Journal of Physics B: Atomic, Molecular and Optical Physics 49 7 https://doi.org/10.1088/0953-4075/49/7/075101 出版済み - 3 16 2016

• 原子分子物理学および光学
• 凝縮系物理学

## フィンガープリント

「X-ray absorption spectroscopy of Ce<sub>2</sub>O<sub>3</sub> <sup>+</sup> and Ce<sub>2</sub>O<sub>5</sub> <sup>+</sup> near Ce M-edge」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。