Dynamic stabilization in 1 sigma(u) -> 1 pi(g) excited nitrogen clusters
Autor(en): | Flesch, R Pavlychev, AA Neville, JJ Blumberg, J Kuhlmann, M Tappe, W Senf, F Schwarzkopf, O Hitchcock, AP Ruhl, E |
Stichwörter: | CO2; DECAY; ENERGY; FREE ARGON CLUSTERS; LOCALIZATION; MOLECULAR CLUSTERS; PHOTOELECTRON; Physics; Physics, Multidisciplinary; SHELL EXCITATION; SPECTRA; SPECTROSCOPY | Erscheinungsdatum: | 2001 | Herausgeber: | AMERICAN PHYSICAL SOC | Enthalten in: | PHYSICAL REVIEW LETTERS | Band: | 86 | Ausgabe: | 17 | Startseite: | 3767 | Seitenende: | 3770 | Zusammenfassung: | High-resolution 1s near-edge spectra of molecular nitrogen and variable size nitrogen clusters ob rained using monochromatic synchrotron radiation from the high brilliance BESSY-IS storage ring facility are reported. The vibrationally resolved 1 sigma (u) --> 1 pi (g) core-to-valence excitation band of clusters shows a distinct redshift of 6 /- 1 meV relative to the isolated molecule, but the vibrational structure and linewidths an essentially unchanged. This shift is assigned to dynamic stabilization of 1 sigma (u) --> 1 pi (g) exicited molecules in clusters, arising from the dynamic dipole moment generated by core-hole localization in the low-symmetry cluster field. This leads to changes in intermolecular interactions compared to the ground-state cluster Such spectral shifts are expected to occur generally in molecular clusters and in the corresponding condensed phase. |
ISSN: | 00319007 | DOI: | 10.1103/PhysRevLett.86.3767 |
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geprüft am 06.06.2024