Multichannel dissociative ionization of ethanol in intense ultraviolet laser fields: Energy correlation between photoelectron emission and fragment recoil

Tomoya Ikuta, Kouichi Hosaka, Hiroshi Akagi, Fumihiko Kannari, Ryuji Itakura

研究成果: Article査読

抄録

We investigate multichannel dissociative ionization of ethanol in intense ultraviolet laser fields using a photoelectron-photoion coincidence momentum imaging technique. Product channels are clearly separated with detected photoions, and channel-specific photoelectron spectra exhibit multiple spectral components unambiguously assigned to four- and five-photon ionization to the electronic ground state and the electronically excited state. We measure kinetic energy distributions of fragment ions as a function of the energy of a correlated photoelectron to reveal how much energy is provided to the fragment recoil of fragment ions in the course of photoelectron emission and subsequent electronic excitation. Subsequent electronic excitation rather than photoelectron emission governs the internal energy of ethanol cations. The role of subsequent electronic excitation becomes more decisive as the laser intensity increases.

本文言語English
論文番号023106
ジャーナルPhysical Review A
106
2
DOI
出版ステータスPublished - 2022 8月

ASJC Scopus subject areas

  • 原子分子物理学および光学

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