Femtosecond interatomic Coulombic decay in free neon clusters: Large lifetime differences between surface and bulk

Summary, in English

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 30 fs. 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.

• Författare: G Ohrwall; Maxim Tchaplyguine; M Lundwall; R Feifel; H Bergersen; T Rander; A Lindblad; Joachim Schulz; Sergey Peredkov; S Barth; S Marburger; U Hergenhahn; S Svensson; O Bjorneholm
• Avdelning/ar: MAX IV-laboratoriet; Synkrotronljusfysik
• Publiceringsår: 2004
• Språk: Engelska
• Publikation/Tidskrift/Serie: Physical Review Letters
• Volym: 93
• Issue: 17
• Länkar: http://dx.doi.org/10.1103/PhysRevLett.93.173401
• Dokumenttyp: Artikel i tidskrift
• Förlag: American Physical Society
• Ämne: Natural Sciences; Physical Sciences; Atom and Molecular Physics and Optics
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1079-7114