Dissociative ionization of ethanol in chirped intense laser fields

Ryuji Itakura; Kaoru Yamanouchi; Takasumi Tanabe; Tatsuyoshi Okamoto; Fumihiko Kannari

doi:10.1063/1.1592504

Dissociative ionization of ethanol in chirped intense laser fields

Ryuji Itakura, Kaoru Yamanouchi, Takasumi Tanabe, Tatsuyoshi Okamoto, Fumihiko Kannari

Research output: Contribution to journal › Article › peer-review

75 Citations (Scopus)

Abstract

The chemical bond breaking processes of ethanol C₂H₅OH in an intense laser field were investigated by choosing the linear chirp rate of the laser field as only one control parameter. Emphasis was on how the competition between the C-C bond breaking and the C-O bond breaking is affected by the chirp rate of the intense laser field. From the dependences of the yields of the molecular fragment ions such as C₂H₄OH⁺, CH₂OH⁺, C₂H₅⁺, OH⁺, and CH₃⁺, on the linear chirp rate, the temporal evolution of the nuclear wave packet at the singly charged stage was elucidated. The observed skeletal bond breaking processes were interpreted well in terms of holding time during which the light-dressed potential energy surface (LDPES) is maintained to guide the wave packet flow either towards the C-C bond elongation or towards the C-O bond elongation.

Original language	English
Pages (from-to)	4179-4186
Number of pages	8
Journal	Journal of Chemical Physics
Volume	119
Issue number	8
DOIs	https://doi.org/10.1063/1.1592504
Publication status	Published - 2003 Aug 22

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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abstract = "The chemical bond breaking processes of ethanol C2H5OH in an intense laser field were investigated by choosing the linear chirp rate of the laser field as only one control parameter. Emphasis was on how the competition between the C-C bond breaking and the C-O bond breaking is affected by the chirp rate of the intense laser field. From the dependences of the yields of the molecular fragment ions such as C2H4OH+, CH2OH+, C2H5+, OH+, and CH3+, on the linear chirp rate, the temporal evolution of the nuclear wave packet at the singly charged stage was elucidated. The observed skeletal bond breaking processes were interpreted well in terms of holding time during which the light-dressed potential energy surface (LDPES) is maintained to guide the wave packet flow either towards the C-C bond elongation or towards the C-O bond elongation.",

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AU - Itakura, Ryuji

AU - Yamanouchi, Kaoru

AU - Tanabe, Takasumi

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AU - Kannari, Fumihiko

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