Molecular orientation via a dynamically induced pulse-train: Wave packet dynamics of NaI in a static electric field

P. Marquetand, A. Materny, Niels Engholm Henriksen, V. Engel

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Abstract

We regard the rovibrational wave packet dynamics of NaI in a static electric field after femtosecond excitation to its first electronically excited state. The following quasibound nuclear wave packet motion is accompanied by a bonding situation changing from covalent to ionic. At times when the charge separation is present, i.e., when the bond-length is large, a strong dipole moment exists and rotational excitation takes place. Upon bond contraction, the then covalently bound molecule does not experience the external field. This scenario repeats itself periodically. Thus, the vibrational dynamics causes a situation which is comparable to the interaction of the molecule with a train of pulses where the pulse separation is determined by the vibrational period. (C) 2004 American Institute of Physics.
Original languageEnglish
JournalJournal of Chemical Physics
Volume120
Issue number13
Pages (from-to)5871-5874
ISSN0021-9606
DOIs
Publication statusPublished - 2004

Bibliographical note

Copyright (2004) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • EXCITATION
  • PREDISSOCIATION
  • DISSOCIATION
  • LASER-PULSES

Cite this

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title = "Molecular orientation via a dynamically induced pulse-train: Wave packet dynamics of NaI in a static electric field",
abstract = "We regard the rovibrational wave packet dynamics of NaI in a static electric field after femtosecond excitation to its first electronically excited state. The following quasibound nuclear wave packet motion is accompanied by a bonding situation changing from covalent to ionic. At times when the charge separation is present, i.e., when the bond-length is large, a strong dipole moment exists and rotational excitation takes place. Upon bond contraction, the then covalently bound molecule does not experience the external field. This scenario repeats itself periodically. Thus, the vibrational dynamics causes a situation which is comparable to the interaction of the molecule with a train of pulses where the pulse separation is determined by the vibrational period. (C) 2004 American Institute of Physics.",
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author = "P. Marquetand and A. Materny and Henriksen, {Niels Engholm} and V. Engel",
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year = "2004",
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Molecular orientation via a dynamically induced pulse-train: Wave packet dynamics of NaI in a static electric field. / Marquetand, P.; Materny, A.; Henriksen, Niels Engholm; Engel, V.

In: Journal of Chemical Physics, Vol. 120, No. 13, 2004, p. 5871-5874.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Molecular orientation via a dynamically induced pulse-train: Wave packet dynamics of NaI in a static electric field

AU - Marquetand, P.

AU - Materny, A.

AU - Henriksen, Niels Engholm

AU - Engel, V.

N1 - Copyright (2004) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

PY - 2004

Y1 - 2004

N2 - We regard the rovibrational wave packet dynamics of NaI in a static electric field after femtosecond excitation to its first electronically excited state. The following quasibound nuclear wave packet motion is accompanied by a bonding situation changing from covalent to ionic. At times when the charge separation is present, i.e., when the bond-length is large, a strong dipole moment exists and rotational excitation takes place. Upon bond contraction, the then covalently bound molecule does not experience the external field. This scenario repeats itself periodically. Thus, the vibrational dynamics causes a situation which is comparable to the interaction of the molecule with a train of pulses where the pulse separation is determined by the vibrational period. (C) 2004 American Institute of Physics.

AB - We regard the rovibrational wave packet dynamics of NaI in a static electric field after femtosecond excitation to its first electronically excited state. The following quasibound nuclear wave packet motion is accompanied by a bonding situation changing from covalent to ionic. At times when the charge separation is present, i.e., when the bond-length is large, a strong dipole moment exists and rotational excitation takes place. Upon bond contraction, the then covalently bound molecule does not experience the external field. This scenario repeats itself periodically. Thus, the vibrational dynamics causes a situation which is comparable to the interaction of the molecule with a train of pulses where the pulse separation is determined by the vibrational period. (C) 2004 American Institute of Physics.

KW - EXCITATION

KW - PREDISSOCIATION

KW - DISSOCIATION

KW - LASER-PULSES

U2 - 10.1063/1.1695315

DO - 10.1063/1.1695315

M3 - Journal article

VL - 120

SP - 5871

EP - 5874

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

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ER -