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Observing electron localization in a dissociating H2+ molecule in real time

Author

Listed:
  • H. Xu

    (Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University)

  • Zhichao Li

    (Key Laboratory for Laser Plasmas (Ministry of Education) and School of Physics and Astronomy, Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University)

  • Feng He

    (Key Laboratory for Laser Plasmas (Ministry of Education) and School of Physics and Astronomy, Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University)

  • X. Wang

    (Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University
    School of Nuclear Science & Technology, Lanzhou University)

  • A. Atia-Tul-Noor

    (Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University)

  • D. Kielpinski

    (Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University)

  • R. T. Sang

    (Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University)

  • I. V. Litvinyuk

    (Centre for Quantum Dynamics and Australian Attosecond Science Facility, Griffith University)

Abstract

Dissociation of diatomic molecules with odd number of electrons always causes the unpaired electron to localize on one of the two resulting atomic fragments. In the simplest diatomic molecule H2+ dissociation yields a hydrogen atom and a proton with the sole electron ending up on one of the two nuclei. That is equivalent to breaking of a chemical bond—the most fundamental chemical process. Here we observe such electron localization in real time by performing a pump–probe experiment. We demonstrate that in H2+ electron localization is complete in just 15 fs when the molecule’s internuclear distance reaches 8 atomic units. The measurement is supported by a theoretical simulation based on numerical solution of the time-dependent Schrödinger equation. This observation advances our understanding of detailed dynamics of molecular dissociation.

Suggested Citation

  • H. Xu & Zhichao Li & Feng He & X. Wang & A. Atia-Tul-Noor & D. Kielpinski & R. T. Sang & I. V. Litvinyuk, 2017. "Observing electron localization in a dissociating H2+ molecule in real time," Nature Communications, Nature, vol. 8(1), pages 1-6, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15849
    DOI: 10.1038/ncomms15849
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