Femtosecond Interatomic Coulombic Decay in Free Neon Clusters: Large Lifetime Differences between Surface and Bulk
Abstract
A quantitative determination of 2s vacancy lifetimes in surface and bulk atoms of free Ne clusters has been made. While for free atoms the 2s inner-valence hole has a ps lifetime, it reduces to 6±1 fs for cluster bulk atoms. For surface atoms, the lifetime is on average longer than 30fs. The lifetime estimate was obtained from fits of high-resolution photoelectron spectra of Ne clusters. The shortening of the lifetime is attributed to the coordination dependent interatomic Coulombic decay, which is extremely sensitive to internuclear distances.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2004
- DOI:
- 10.1103/PhysRevLett.93.173401
- Bibcode:
- 2004PhRvL..93q3401O
- Keywords:
-
- 36.40.Cg;
- 34.50.Gb;
- Electronic and magnetic properties of clusters;
- Electronic excitation and ionization of molecules;
- intermediate molecular states