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  Generation of ultra-short hydrogen atom pulses by bunch-compression photolysis.

Kaufmann, S., Schwarzer, D., Reichardt, C., Wodtke, A. M., & Bünermann, O. (2014). Generation of ultra-short hydrogen atom pulses by bunch-compression photolysis. Nature Communications, 5: 5373. doi:10.1038/ncomms6373.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-400F-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-CE0B-B
Genre: Journal Article

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 Creators:
Kaufmann, S.1, Author              
Schwarzer, D.2, Author              
Reichardt, C.2, Author              
Wodtke, A. M.1, Author              
Bünermann, O., Author
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1Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              
2Research Group of Reaction Dynamics, MPI for biophysical chemistry, Max Planck Society, ou_578601              

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 Abstract: Ultra-short light pulses enable many time-resolved studies in chemistry, especially when used in pump-probe experiments. However, most chemical events are not initiated by light, but rather by collisions. Time-resolved collisional experiments require ultra-short pulses of atoms and molecules-sadly, methods for producing such pulses are so far unknown. Here we introduce bunch-compression photolysis, an approach to forming ultra-short and highly intense pulses of neutral atoms. We demonstrate H-atom pulses of 1.2±0.3ns duration, far shorter than any previously reported. Owing to its extraordinarily simple physical principles, we can accurately model the method-the model shows H-atom pulses as short as 110-ps are achievable. Importantly, due to the bunch-compression, large (mm(3)) photolysis volumes are possible, a key advantage for pulse intensity. This technique overcomes the most challenging barrier to a new class of experiments on time-resolved collisions involving atoms and molecules.

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Language(s): eng - English
 Dates: 2014-11-05
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1038/ncomms6373
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Title: Nature Communications
Source Genre: Journal
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Pages: 5 Volume / Issue: 5 Sequence Number: 5373 Start / End Page: - Identifier: -