Unusual under-threshold ionization of neon clusters studied by ion spectroscopy

K. Nagaya, A. Sugishima, H. Iwayama, H. Murakami, M. Yao, H. Fukuzawa, X. J. Liu, K. Motomura, K. Ueda, N. Saito, L. Foucar, A. Rudenko, M. Kurka, K. U. Kühnel, J. Ullrich, A. Czasch, R. Dörner, R. Feifel, M. Nagasono, A. HigashiyaM. Yabashi, T. Ishikawa, T. Togashi, H. Kimura, H. Ohashi

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15 Citations (Scopus)


We carried out time-of-flight mass spectrometry for neon clusters that were exposed to intense free electron laser pulses with the wavelength of 62 nm, which induce optical transition from the ground state (2s2 2p 6) to an excited state (2s2 2p5 nl ) in the Ne atoms. In contrast to Ne+ ions produced by two-photon absorption from isolated Ne atoms, the Ne+ ion yield from Ne clusters shows a linear dependence on the laser intensity (I). We discuss the ionization mechanisms which give the linear behaviour with respect to I and expected features in the electron emission spectrum.

Original languageEnglish
Article number164023
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number16
Publication statusPublished - 2013 Aug 28

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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