Vibrational spectroscopy of gas-phase metal-carbide clusters and nanocrystals

被引：96

作者：

van Heijnsbergen, D

von Helden, G

Duncan, MA

van Roij, AJA

Meijer, G

机构：

[1] Catholic Univ Nijmegen, Dept Mol & Laser Phys, NL-6525 ED Nijmegen, Netherlands

[2] EURATOM, FOM, Inst Plasma Phys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands

[3] Univ Georgia, Dept Chem, Athens, GA 30602 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.83.4983

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Neutral Ti8C12 and Ti14C13 clusters are produced in the gas phase with pulsed-nozzle laser vaporization. Infrared multiphoton excitation with a pulsed free-electron laser results in thermionic electron emission for these clusters, and the parent molecular ions are detected. Multiphoton ionization is strongly enhanced on vibrational resonances of these clusters, making it possible to observe infrared resonance-enhanced multiphoton ionization spectra. These spectra indicate C-C bonding for the "met-cars" while Ti14C13 has remarkable similarities to bulk KC.

引用

页码：4983 / 4986

页数：4

共 26 条

[1] MULTIPHOTON EXCITATION, IONIZATION, AND DISSOCIATION DECAY DYNAMICS OF SMALL CLUSTERS OF NIOBIUM, TANTALUM, AND TUNGSTEN - TIME-RESOLVED THERMIONIC EMISSION [J].