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Electron recollisional excitation of OCS+ in phase-locked ω + 2ω intense laser fields
https://repo.qst.go.jp/records/2002848
https://repo.qst.go.jp/records/20028489f0fdac3-c9af-49fb-a021-7431e001bc45
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2026-02-27 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Electron recollisional excitation of OCS+ in phase-locked ω + 2ω intense laser fields | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | journal article | |||||||||||
| 著者 |
Endo Tomoyuki
× Endo Tomoyuki
× Otobe Tomohito
× Itakura Ryuji
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Photoelectron-photoion coincidence momentum imaging has been performed to investigate excitation processes on dissociative ionization of OCS, OCS → OCS+ + e− → OC + S+ + e−, in phase-locked ω + 2ω intense laser fields. The electron kinetic energy spectra depend on coincidentally produced ion species, OCS+ or S+. The observed electron momentum distribution shows a clear asymmetry along the laser polarization direction with a 2π-oscillation period as a function of the phase difference in ω + 2ω laser fields. The asymmetry of the electron emission in the OCS+ channel flips at the electron kinetic energy of 8.2 eV where the dominant scattering direction switches from forward to backward. In the S+ channel, the asymmetry flip occurs at the lower kinetic energy of 4.2 eV, and this shift corresponds to an inelastic scattering process. In comparison with a classical trajectory Monte-Carlo simulation, it has been clarified that the shift of the electron kinetic energy at which the asymmetry flip occurs corresponds to the excitation energy of the parent ion and indicates contributions of electron recollisional excitation to form the fragment ion in intense laser fields. | |||||||||||
| 書誌情報 |
Physical Chemistry Chemical Physics 発行日 2026-02 |
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| 出版者 | ||||||||||||
| 出版者 | Royal Society of Chemistry | |||||||||||
| DOI | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1039/D5CP04819B | |||||||||||
