Determination of the absolute two-photon ionization cross section of He by an XUV free electron laser

Takahiro Sato, Atsushi Iwasaki, Kazuki Ishibashi, Tomoya Okino, Kaoru Yamanouchi, Junichi Adachi, Akira Yagishita, Hiroki Yazawa, Fumihiko Kannari, Makoto Aoyma, Koichi Yamakawa, Katsumi Midorikawa, Hidetoshi Nakano, Makina Yabashi, Mitsuru Nagasono, Atsushi Higashiya, Tetsuya Ishikawa

研究成果: Article査読

35 被引用数 (Scopus)

抄録

The resonant and non-resonant two-photon single ionization processes of He were investigated using intense free electron laser light in the extreme ultraviolet (XUV) region (53.4-61.4 nm) covering the 1s-2p and 1s-3p resonant transitions of He. On the basis of the dependences of the yield of He + on the XUV light-field intensity at 53.4, 58.4, 56.0 and 61.4 nm, the absolute values of the two-photon ionization cross sections of He at the four different wavelengths and their dependence on the light-field intensity were determined for the first time.

本文言語English
論文番号161001
ジャーナルJournal of Physics B: Atomic, Molecular and Optical Physics
44
16
DOI
出版ステータスPublished - 2011 8 28

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 凝縮系物理学

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