Ultrafast relaxation dynamics of uracil probed via strong field dissociative ionization

Spiridoula Matsika; Michael Spanner; Marija Kotur; Thomas C. Weinacht

doi:10.1021/jp408073d

Ultrafast relaxation dynamics of uracil probed via strong field dissociative ionization

Spiridoula Matsika
, Michael Spanner
, Marija Kotur
, Thomas C. Weinacht

Physics and Astronomy

Temple University
National Research Council of Canada
Lund University

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

We study the ultrafast relaxation dynamics of uracil excited to the first bright ππ* state (S₂) by an ultrafast laser pulse in the deep ultraviolet (central wavelength λ₀ = 260 nm). With a unique combination of strong field dissociative ionization measurements, state of the art strong field ionization calculations, and high level ab initio calculations of excited neutral and ionic states at critical points along the neutral potentials, we are able to gain a detailed picture of the relaxation dynamics of the molecule, which resolves earlier disagreements regarding measurements and calculations of the relaxation.

Original language	English
Pages (from-to)	12796-12801
Number of pages	6
Journal	Journal of Physical Chemistry A
Volume	117
Issue number	48
DOIs	https://doi.org/10.1021/jp408073d
State	Published - Dec 5 2013

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abstract = "We study the ultrafast relaxation dynamics of uracil excited to the first bright ππ* state (S2) by an ultrafast laser pulse in the deep ultraviolet (central wavelength λ0 = 260 nm). With a unique combination of strong field dissociative ionization measurements, state of the art strong field ionization calculations, and high level ab initio calculations of excited neutral and ionic states at critical points along the neutral potentials, we are able to gain a detailed picture of the relaxation dynamics of the molecule, which resolves earlier disagreements regarding measurements and calculations of the relaxation.",

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AU - Matsika, Spiridoula

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AU - Kotur, Marija

AU - Weinacht, Thomas C.

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N2 - We study the ultrafast relaxation dynamics of uracil excited to the first bright ππ* state (S2) by an ultrafast laser pulse in the deep ultraviolet (central wavelength λ0 = 260 nm). With a unique combination of strong field dissociative ionization measurements, state of the art strong field ionization calculations, and high level ab initio calculations of excited neutral and ionic states at critical points along the neutral potentials, we are able to gain a detailed picture of the relaxation dynamics of the molecule, which resolves earlier disagreements regarding measurements and calculations of the relaxation.

AB - We study the ultrafast relaxation dynamics of uracil excited to the first bright ππ* state (S2) by an ultrafast laser pulse in the deep ultraviolet (central wavelength λ0 = 260 nm). With a unique combination of strong field dissociative ionization measurements, state of the art strong field ionization calculations, and high level ab initio calculations of excited neutral and ionic states at critical points along the neutral potentials, we are able to gain a detailed picture of the relaxation dynamics of the molecule, which resolves earlier disagreements regarding measurements and calculations of the relaxation.

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ER -

Ultrafast relaxation dynamics of uracil probed via strong field dissociative ionization

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