Research output: Contribution to journal › Article › peer-review
Recent progress on core-level excitation of molecular van der Waals clusters is reported. Resonant excitation near element K edges of isolated and clustered molecules gives rise to small spectral shifts that can only be detected with high spectral resolution. This requires the use of state-of-the-art storage-ring facilities along with insertion devices and high-resolution soft X-ray monochromators. Selected experimental results on carbon monoxide clusters are reported. For the vibrationally resolved C 1s → π* (ν = 0) band of clustered CO, these indicate characteristic line broadening as well as a small red shift of 2 ± 1 meV compared with the isolated molecule. The results are discussed within the framework of the quasi-atomic approach with respect to intermolecular interactions, freezing of molecular rotations in clusters, and dynamic localization of resonant core-to-valence excitations.
Original language | English |
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Pages (from-to) | 154-157 |
Number of pages | 4 |
Journal | Journal of Synchrotron Radiation |
Volume | 8 |
Issue number | 2 |
DOIs | |
State | Published - 1 Mar 2001 |
ID: 43208774