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Capturing roaming molecular fragments in real-time
https://repo.qst.go.jp/records/81115
https://repo.qst.go.jp/records/81115da64105c-8fb7-48df-b376-96f479811c39
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-04-16 | |||||
| タイトル | ||||||
| タイトル | Capturing roaming molecular fragments in real-time | |||||
| 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 | |||||
| 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. | |||||
| 書誌情報 |
Science 巻 370, 号 6520, p. 1072-1077, 発行日 2020-11 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0036-8075 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1126/science.abc2960 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://science.sciencemag.org/content/370/6520/1072 | |||||
