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H2CO分子の超高速緩和およびローミング過程の実時間観測
https://repo.qst.go.jp/records/83458
https://repo.qst.go.jp/records/8345868f9a62b-ebf0-4d3d-ac26-aa66d4b8fee7
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-04-14 | |||||
| タイトル | ||||||
| タイトル | H2CO分子の超高速緩和およびローミング過程の実時間観測 | |||||
| タイトル | ||||||
| タイトル | Capturing ultrafast relaxation and roaming processes of H2CO in real time | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Endo, Tomoyuki
× Endo, Tomoyuki× P. Neville, Simon× Wanie, Vincent× Beaulieu, Samuel× Qu, Chen× Deschamps, Jude× Lassonde, Philippe× E. Schmidt, Bruno× Fujise, Hikaru× Fushitani, Mizuho× Hishikawa, Akiyoshi× L. Houston, Paul× M. Bowman, Joel× S. Schuurman, Michael× François, Légaré× Ibrahim, Heide× Tomoyuki, Endo |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Since the discovery of roaming as an alternative molecular dissociation pathway in formaldehyde (H2CO), it has been indirectly observed in numerous molecules. The phenomenon describes a frustrated dissociation with fragments roaming at relatively large interatomic distances rather than following conventional transition-state dissociation; incipient radicals from the parent molecule self-react to form molecular products. Roaming has been identified spectroscopically through static product channel–resolved measurements, but not in real-time observations of the roaming fragment itself. Using time-resolved Coulomb explosion imaging (CEI), we directly imaged individual“roamers”on ultrafast timescales in the prototypical formaldehyde dissociation reaction. Using high-level first-principles simulationsof all critical experimental steps, distinctive roaming signatures were identified. These were rendered observable by extracting rare stochastic events out of an overwhelming background using the highly sensitive CEI method. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 第15回分子科学討論会 | |||||
| 発表年月日 | ||||||
| 日付 | 2021-09-21 | |||||
| 日付タイプ | Issued | |||||
