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Effect of nuclear mass on carrier-envelope-phase-controlled electron localization in dissociating molecules

Han Xu, Tian-Yu Xu, Feng He, D. Kielpinski, R. T. Sang, and I. V. Litvinyuk
Phys. Rev. A 89, 041403(R) – Published 15 April 2014

Abstract

We explore the effect of nuclear mass on the laser-driven electron localization process. We dissociate a mixed H2 and D2 target with intense, carrier-envelope-phase (CEP) stable 6 fs laser pulses and detect the products in a reaction microscope. We observe a very strong CEP-dependent asymmetry in proton and deuteron emission for low dissociation energy channels. This asymmetry is stronger for H2 than for D2. We also observe a large CEP offset between the asymmetry spectra for H2 and D2. Our theoretical simulations, based on a one-dimensional two-channel model, agree very well with the asymmetry spectra, but fail to account properly for the phase difference between the two isotopes.

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  • Received 26 November 2013

DOI:https://doi.org/10.1103/PhysRevA.89.041403

©2014 American Physical Society

Authors & Affiliations

Han Xu1, Tian-Yu Xu2, Feng He2,*, D. Kielpinski1,3, R. T. Sang1,3, and I. V. Litvinyuk1,†

  • 1Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University, Nathan, QLD 4111, Australia
  • 2Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, SJTU, Shanghai 200240, People's Republic of China
  • 3ARC Centre of Excellence for Coherent X-Ray Science, Griffith University, Nathan, QLD 4111, Australia

  • *fhe@sjtu.edu.cn
  • i.litvinyuk@griffith.edu.au

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Issue

Vol. 89, Iss. 4 — April 2014

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