METASTABLE DISSOCIATION DYNAMICS OF MOLECULAR CLUSTER IONS

被引：6

作者：

SHINOHARA, H ^{[1
]}

SATO, H ^{[1
]}

MISAIZU, F ^{[1
]}

OHASHI, K ^{[1
]}

NISHI, N ^{[1
]}

机构：

[1] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1991年 / 20卷 / 1-4期

关键词：

D O I：

10.1007/BF01543972

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：

Metastable uni-cluster dissociation for several hydrogen-bonded and van der Waals cluster ions are observed via resonance-enhanced two-photon ionization reflectron time-of-flight (TOF) mass spectrometry. All of the cluster ions studied show evaporation of a single molecule from the respective parent cluster ions as dominant metastable decay processes. Furthermore, the averaged metastable evaporation rate constants (k(evap)) of these cluster ions in a fixed time domain of 0.2-50-mu-s are obtained by analyzing the relative intensity of metastable ion peaks due to evaporation in the acceleration and the field-free drift regions of the TOF mass spectrometer. An intensity anomaly in some of the observed metastable ion peaks, indicative of magic number stability of the cluster ion, is also presented.

引用

页码：197 / 200

页数：4

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