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Time-resolved photo...
Time-resolved photoelectron spectroscopy on small tungsten cluster anions
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Stanzel, J. (författare)
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- Burmeister, Florian (författare)
- Uppsala universitet,Elektricitetslära
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Neeb, M. (författare)
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(creator_code:org_t)
- 2010-03-19
- 2010
- Engelska.
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Ingår i: Applied Physics A. - : Springer Science and Business Media LLC. - 0947-8396 .- 1432-0630. ; 100:1, s. 21-29
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have studied the dynamics of photoexcited tungsten cluster anions W-n(-) (n = 3,4, ..., 14) by means of time-resolved two-photon photodetachment spectroscopy. At an excitation energy of h nu (pump)=1.56 eV the photoinduced dynamics is mainly dominated by fast electronic relaxation processes. For the smallest clusters, i.c., W-3(-), W-4(-), and W-5(-), individual relaxation channels have been identified and resolved on a timescale well below 100 fs. The time constants for the decay of nascent and secondary electrons have been deduced from a Bloch model. Complete thermalization takes place for all clusters on a timescale of similar to 1 ps.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Physics
- Fysik
- TECHNOLOGY
- TEKNIKVETENSKAP
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