Journal
APPLIED SCIENCES-BASEL
Volume 9, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/app9091941
Keywords
electron coherence; charge migration; soft X-ray attosecond pulse; time-resolved photoelectron imaging
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Fonds de recherche du Quebec-Nature et technologies (FRQNT)
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Electron coherence is a fundamental quantum phenomenon in today's ultrafast physics and chemistry research. Based on attosecond pump-probe schemes, ultrafast X-ray photoelectron imaging of molecules was used to monitor the coherent electron dynamics which is created by an XUV pulse. We performed simulations on the molecular ion H2+by numerically solving time-dependent Schrodinger equations. It was found that the X-ray photoelectron angular and momentum distributions depend on the time delay between the XUV pump and soft X-ray probe pulses. Varying the polarization and helicity of the soft X-ray probe pulse gave rise to a modulation of the time-resolved photoelectron distributions. The present results provide a new approach for exploring ultrafast coherent electron dynamics and charge migration in reactions of molecules on the attosecond time scale.
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