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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 5107–5116

Anomalous isotopic effect on electron-directed reactivity by a 3-μm midinfrared pulse

Kunlong Liu, Qingbin Zhang, Pengfei Lan, and Peixiang Lu  »View Author Affiliations


Optics Express, Vol. 21, Issue 4, pp. 5107-5116 (2013)
http://dx.doi.org/10.1364/OE.21.005107


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Abstract

We have theoretically studied the effect of nuclear mass on electron localization in dissociating H2 + and its isotopes subjected to a few-cycle 3-μm pulse. Our results reveal an anomalous isotopic effect in which the degree of electron-directed reactivity can be even higher for heavier isotopes in the intense midinfrared field. We show, for the first time, the pronounced electron localization can be established through the interferences among the multi-photon coupling channels. Due to the relative enhancement of higher-order coupling channels with growing mass, the interference maxima at different kinetic energy of the spectra gradually become in phase, ultimately resulting in the larger dissociation asymmetries of heavier isotopes.

© 2013 OSA

OCIS Codes
(020.4180) Atomic and molecular physics : Multiphoton processes
(270.6620) Quantum optics : Strong-field processes
(020.2649) Atomic and molecular physics : Strong field laser physics

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: November 14, 2012
Revised Manuscript: January 8, 2013
Manuscript Accepted: February 16, 2013
Published: February 22, 2013

Citation
Kunlong Liu, Qingbin Zhang, Pengfei Lan, and Peixiang Lu, "Anomalous isotopic effect on electron-directed reactivity by a 3-μm midinfrared pulse," Opt. Express 21, 5107-5116 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-4-5107


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