Femtosecond photodissociation dynamics of I2 studied by ion imaging

Autor:	rkbak, Mette Machholm, Johannes Olesen, Nis Bjerre, Henrik Stapelfeldt, ren R. Keiding, Jakob Juul Larsen, Nils Jakob Mo
Rok vydání:	1998
Předmět:	Chemistry Polyatomic ion Photodissociation Coulomb explosion General Physics and Astronomy Pulse (physics) Ion Molecular dynamics Ionization Femtosecond Physics::Atomic and Molecular Clusters Physics::Chemical Physics Physical and Theoretical Chemistry Atomic physics
Zdroj:	The Journal of Chemical Physics. 109:8857-8863
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.477557
Popis:	Ion imaging is employed to analyze the fragments from timed Coulomb explosion studies of femtosecond (fs) molecular dynamics. The technique provides high detection efficiency and direct recording of the two-dimensional velocity of all ionized fragments. We illustrate the approach by studying photodissociation of iodine initiated by a weak femtosecond pump pulse and probed by an intense, delayed femtosecond pulse. The ion images, recorded as a function of the pump-probe delay, reveal the evolution of the internuclear separation of the dissociating I2 molecule. The experimental results are in good agreement with quantum mechanical wave packet simulations. We discuss the perspectives for extending the studies to photochemical reactions of small polyatomic molecules.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::85f9032cc134dc5be62d23f6aace796c https://doi.org/10.1063/1.477557 Zobrazit plný text záznamu