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Artículo

Photoionization of water molecules by a train of attosecond pulses assisted by a near-infrared laser: Delay and polarization control

Martini, LaraIcon ; Boll, Diego Iván RenéIcon ; Fojon, Omar ArielIcon
Fecha de publicación: 09/2017
Editorial: the International Society for Optical Engineering
Revista: Spie
ISSN: 0277-786X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Astronomía

Resumen

Basic reactions involving water molecules are essential to understand the interaction between radiation and the biological tissue because living cells are composed mostly by water. Therefore, the knowledge of ionization of the latter is crucial in many domains of Biology and Physics. So, we study theoretically the photoionization of water molecules by extreme ultraviolet attopulse trains assisted by lasers in the near-infrared range. We use a separable Coulomb-Volkov model in which the temporal evolution of the system can be divided into three stages allowing spatial and temporal separation for the Coulomb and Volkov final state wavefunctions. First, we analyze photoelectron angular distributions for different delays between the attopulse train and the assistant laser field. We compare our results for water and Ne atoms as they belong to the same isoelectronic series. Moreover, we contrast our calculations with previous theoretical and experimental work for Ar atoms due to the similarities of the orbitals involved in the reaction. Second, we study the effect of varying the relative orientations of the attopulse and laser field polarizations and we compare our predictions with other theories and experiments. We expect these studies contribute to the improvement of polarization experiments and the development of the attopulse trains and assistant laser fields technologies. Finally, we hope our work promote progress on the control of the chemical reactivity of water molecules since this could be useful in different fields such as radiobiology and medical physics.
Palabras clave: Attopulses , Photoionization , Reaction Control , Water Molecules
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/64158
DOI: https://dx.doi.org/10.1117/12.2273198
URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10347/2273198/
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Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
Martini, Lara; Boll, Diego Iván René; Fojon, Omar Ariel; Photoionization of water molecules by a train of attosecond pulses assisted by a near-infrared laser: Delay and polarization control; the International Society for Optical Engineering; Spie; 1034; 9-2017; 1-9
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