COLLISION-INDUCED DISSOCIATION OF NBN+ (N = 2 - 11) - BOND-ENERGIES AND DISSOCIATION PATHWAYS

被引：224

作者：

HALES, DA ^{[1
]}

LIAN, L ^{[1
]}

ARMENTROUT, PB ^{[1
]}

机构：

[1] UNIV UTAH,DEPT CHEM,SALT LAKE CITY,UT 84112

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1990年 / 102卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0168-1176(90)80065-B

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The kinetic energy dependence of collision-induced dissociation (CID) of cluster ions of niobium with xenon has been investigated using guided ion beam mass spectrometry. Dissociation energies for ionic and neutral niobium clusters of up to eleven atoms are reported. The dependence of the CID cross-sections on Xe pressure, a phenomenon reported previously, is thoroughly investigated and a protocol for analysis which properly takes this effect into account is established. Lifetime effects are allowed for by employing an RRKM formalism in the cross-section modeling routine. The results are found to be in excellent agreement with the spherical drop model for convergence to bulk. The derived bond strengths as a function of cluster size inspire some speculations regarding cluster structure.

引用

页码：269 / 301

页数：33

共 56 条

[1] DISSOCIATIVE CHEMISORPTION OF H-2 ON NIOBIUM CLUSTER IONS - A SUPERSONIC CLUSTER BEAM FT-ICR EXPERIMENT [J].