| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-07-29 |
| タイトル |
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タイトル |
Orientation-angle-resolved photoelectron angular distribution in dissociative ionization of methanol induced by an intense ultraviolet laser pulse |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Shinichi Fukahori
Tomohito Otobe
Hiroshi Akagi
Kaoru Yamanouchi
Ryuji Itakura
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We investigate dissociative ionization of methanol, CH$_3$OH → CH$_3^+$ + OH + e$^?$, in a linearly polarized intense ultraviolet laser field (400 nm, 67 fs, 3.1×10$^13$ W/cm$^2$) by photoelectron-photoion coincidence three-dimensional momentum imaging. The photoelectron emission processes are clarified on the basis of the photoelectron angular distribution (PAD) in the molecular frame as a function of the orientation angle between the molecular C-O bond axis and the laser polarization direction. Photoelectrons are emitted dominantly along the laser polarization direction when CH$_3$OH$^+$ is produced in the X state via the four-photon absorption. By contrast, the photoelectron emission becomes prominent along the direction perpendicular to the laser polarization direction when CH$_3$OH$^+$ is produced in the B state via the five-photon absorption. The orientation-angle resolved PADs are expanded in terms of spherical harmonics in the laboratory frame and then the anisotropy of the PADs depending on the orientation angle is examined quantitatively. We discuss how the shape of the molecular orbital from which an electron is emitted is reflected in the recorded PADs. |
| 書誌情報 |
Physical Review A
巻 107,
p. 053118,
発行日 2023-05
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| 出版者 |
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出版者 |
American Physical Society |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2469-9934 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevA.107.053118 |
