Photoabsorption Spectra of Double- and Triple-Excitations above the Calcium 3p Threshold

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概要

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• Calcium triple photoexcitations leading to 3p satellites have been observed by photoion spectroscopy measurements in the photoion energy region 35 to 42 eV. Monochromatized synchrotron radiation has been used for light source. The photoions are counted by discriminating the resultant calcium ionic charge states. Many photoion spectral peaks are found above the calcium 3p double excitation region. Two series of triple excitation have been found; one starts at 37.1 eV and the other starts at 40.6 eV in photon energies. To gain a deep insight of the triple-electron excitations, multi-configuration Dirac--Fock calculations have been carried out. The photo-excited 3p-vacancy states are found to be a strong mixture of 3d, 4s, and 4p orbitals. A compact 3d-orbital describes well the lower energy satellite resonances, whereas a diffuse 3d-orbital describes well the higher energy satellite resonances.

• 2011-03-15

著者

• OSAWA Tetsutaro

  Department of Science and Technology, Meisei University

• HASEGAWA Shuichi

  Department of Quantum Engineering and System Science, University of Tokyo

• Tohyama Yuko

  Department Of Physics Meisei University

• Tsuge Satoshi

  Department Of Science And Technology Meisei University

• Nagata Tetsuo

  Department Of Physics Meisei University

• Koike Fumihiro

  School Of Medicine Kitasato University

• Kayama Emi

  Department Of Science And Technology Meisei University

• Osawa Tetsutaro

  Department of Science and Technology, Meisei University, Hino, Tokyo 191-8506, Japan

• Kayama Emi

  Department of Science and Technology, Meisei University, Hino, Tokyo 191-8506, Japan

• Koide Michi

  School of Medicine, Kitasato University, Sagamihara 252-0374, Japan

• Obara Satoshi

  Institute for Material Structure Science, KEK, Tsukuba, Ibaraki 05-0801, Japan

• Azuma Yoshiro

  Institute for Material Structure Science, KEK, Tsukuba, Ibaraki 05-0801, Japan

• Nagata Tetsuo

  Department of Science and Technology, Meisei University, Hino, Tokyo 191-8506, Japan

• KAYAMA Emi

  Department of Physics, Meisei University

• Tohyama Yuko

  Department of Science and Technology, Meisei University, Hino, Tokyo 191-8506, Japan

• Koike Fumihiro

  School of Medicine, Kitasato University, Sagamihara 252-0374, Japan

• TSUGE Satoshi

  Department of Physics, Meisei University

• Hasegawa Shuichi

  Department of Quantum Engineering and System Science, University of Tokyo, Bunkyo, Tokyo 113-8651, Japan

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