Sökning: WFRF:(Andersson Stig 1941)
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Dipole active rotat...
Dipole active rotations of physisorbed H2 and D
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- Svensson, Krister, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bellman, Johan, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hellman, Anders, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andersson, Stig, 1941 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg
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(creator_code:org_t)
- 2005
- 2005
- Engelska.
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Ingår i: Physics Reveiw B. - 0163-1829 .- 2469-9969 .- 2469-9950. ; 71
- Relaterad länk:
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http://dx.doi.org/10...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- We have, in electron-energy-loss measurements, observed dipole activity associated with the j=02 rotational transitions for H2 and D2 physisorbed on a Cu(100) surface and at Au adatoms on this surface. Such dipole transitions, which are forbidden for the free molecules, provide for example, via rotation-translation conversion, channels for infrared photodesorption. Using two simple dipole moment functions, we have, for the bare Cu(100) surface, calculated dipole matrix elements for the rotational transition and its combination mode with the =01 vibrational transition in the physisorption well. Our calculations reveal that the anisotropy of the molecular electronic polarizability induces a significant dynamic dipole coupled to the rotational and rotational-vibrational motion, but are unable to reproduce the measured relative intensities of the corresponding transitions.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
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- art (ämneskategori)
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