Photodissociation dynamics of randomly oriented molecular ensembles by time-resolved electron diffraction
by Schafer, Lothar; Ischenko, Anatoly A.; Zhabanov, Yury A.; Otlyotov, Arseniy A.; Girichev, Georgiy V.
The introduction of time in diffraction methods and the development of foundational principles of their anal. opens up new methodologies to study transient states of the reac-tion centers, and short-lived intermediate compounds in gaseous and condensed media. In the current article, we propose the basic elements of the theory that can be employed in anal-yses of TRED data recorded from randomly oriented laser-excited mols. The formalism is applicable to photodissociative processes and to nuclear dynamics studies of photodissoci-ation phenomena. The theory was illustrated by modeling the diffraction intensities of photo-generated dissociation of ICN mols. Based on model calculations presented in this arti-cle we conclude that, by TRED method, time-dependent coherent dissociation dynamics can in principle be resolved at a realistic time scale that significantly shorter than the electron pulse duration of 300 fs, which is achieved at present in a number of TRED experiments
- Journal
- Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya
- Volume
- 59
- Issue
- 12
- Year
- 2016
- Start Page
- 22-31
- URL
- https://dx.doi.org/10.6060/tcct.20165912.5514
- ISBN/ISSN
- 2500-3070; 0579-2991
- DOI
- 10.6060/tcct.20165912.5514