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Real-Time Observation of Vibrational Wavepackets of Nitrogen Molecule Using A-Few-Pulse Attosecond Pulse Train

  • Tomoya Okino
  • Yasuo Nabekawa
  • Katsumi Midorikawa
Chapter
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 118)

Abstract

Observation of quantum wavepackets in molecules is one of the vital steps in understanding chemical reactions occurring at femtosecond and attosecond timescales, because the broadband light sources inevitably coherently excite multiple quantum states. A-few-pulse attosecond pulse train generated via high-order harmonic generation in loose focusing geometry is sufficiently strong to induce multi-photon absorption processes and the pulse envelope is sufficiently short to resolve the nuclear motions. We investigated the vibrational wavepackets in a nitrogen molecule using a-few-pulse attosecond pulse train by measuring the pump-probe delay dependence of momentum images of fragment ions generated in singly charged manifolds via two-photon dissociative ionization processes using a velocity map imaging ion spectrometer. The time evolutions of vibrational wavepackets launched both in neutral and singly charged manifolds were projected using a frequency-resolved momentum imaging method.

Notes

Acknowledgements

This work was supported in part by the Photon Frontier Network Program of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Japan. T.O., Y.N., and K.M. acknowledge the financial support of JSPS Grants-in-Aid for Scientific Research (Nos. 15H03581, 26247068, and 26220606). T.O. acknowledges the financial support from JST PRESTO Grant Number JPMJPR15P6, Japan.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Tomoya Okino
    • 1
    • 2
  • Yasuo Nabekawa
    • 1
  • Katsumi Midorikawa
    • 1
  1. 1.Attosecond Science Research TeamRIKEN Center for Advanced PhotonicsWako-shiJapan
  2. 2.JST PRESTOWako-shiJapan

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