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  Femtosecond photoelectron diffraction: A new approach to image molecular structure during photochemical reactions.

Rolles, D., Boll, R., Tamrakar, S. R., & Anielski, D. (2014). Femtosecond photoelectron diffraction: A new approach to image molecular structure during photochemical reactions. Proceedings of SPIE, 9198: 919800. doi:10.1117/12.2061783.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-01D3-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-01D6-8
Genre: Conference Paper

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 Creators:
Rolles, D., Author
Boll, R.1, Author              
Tamrakar, S. R., Author
Anielski, D., Author
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1Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society, ou_578564              

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 Abstract: Continuing technical advances in the creation of (sub-) femtosecond VUV and X-ray pulses with Free-Electron Lasers and laser-based high-harmonic-generation sources have created new opportunities for studying ultrafast dynamics during chemical reactions. Here, we present an approach to image the geometric structure of gas-phase molecules with fewfemtosecond temporal and sub-Ångström spatial resolution using femtosecond photoelectron diffraction. This technique allows imaging the molecules “from within” by analyzing the diffraction of inner-shell photoelectrons that are created by femtosecond VUV and X-ray pulses. Using pump-probe schemes, ultrafast structural changes during photochemical reactions can thus be directly visualized with a temporal resolution that is only limited by the pulse durations of the pump and the probe pulse and the synchronization of the two light pulses. Here, we illustrate the principle of photoelectron diffraction using a simple, geometric scattering model and present results from photoelectron diffraction experiments on laser-aligned molecules using X-ray pulses from a Free-Electron Laser.

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Language(s): eng - English
 Dates: 2014-09-05
 Publication Status: Published online
 Pages: -
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 Rev. Method: Peer
 Identifiers: DOI: 10.1117/12.2061783
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Title: Ultrafast Nonlinear Imaging and Spectroscopy II
Place of Event: San Diego, California, United States
Start-/End Date: 2014-08-17 - 2014-08-17

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Title: Proceedings of SPIE
Source Genre: Journal
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Pages: 12 Volume / Issue: 9198 Sequence Number: 919800 Start / End Page: - Identifier: -