Direct measurement of water cluster concentrations by infrared cavity ringdown laser absorption spectroscopy

被引：216

作者：

Paul, JB ^{[1
]}

Collier, CP ^{[1
]}

Saykally, RJ ^{[1
]}

Scherer, JJ ^{[1
]}

OKeefe, A ^{[1
]}

机构：

[1] LOS GATOS RES,MT VIEW,CA 94043

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 1997年 / 101卷 / 29期

关键词：

D O I：

10.1021/jp971216z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The recently developed technique of infrared cavity ringdown laser absorption spectroscopy (IR-CRLAS) has been employed in the 3.0 mu m region to determine the absolute concentrations of water dimers, trimers, tetramers, and pentamers in a pulsed supersonic expansion for the first time. Additional spectral features are reported, one of which we assign to the bound O-H stretching bands of the hexamer. Additionally, by simple variation of the jet stagnation pressure, the collective O-H stretching absorption from all clusters produced in the expansion was observed to change from that of discrete features of small clusters to band profiles of liquid water and finally to amorphous ice.

引用

页码：5211 / 5214

页数：4

共 25 条

[1] IR-SPECTRA OF MATRIX-ISOLATED WATER SPECIES .1. ASSIGNMENT OF BANDS TO (H2O)2, (D2O)2 AND HDO DIMER SPECIES IN ARGON MATRICES [J].