Development of a jet-REMPI (resonantly enhanced multiphoton ionization) continuous monitor for environmental applications

被引：21

作者：

Oser, H ^{[1
]}

Coggiola, MJ ^{[1
]}

Faris, GW ^{[1
]}

Young, SE ^{[1
]}

Volquardsen, B ^{[1
]}

Crosley, DR ^{[1
]}

机构：

[1] SRI Int, Phys Mol Lab, Menlo Pk, CA 94025 USA

来源：

APPLIED OPTICS | 2001年 / 40卷 / 06期

关键词：

D O I：

10.1364/AO.40.000859

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The need for a continuous monitor for environmentally important pollutants at realistic [parts-pertrillion (parts in 10(12))] concentrations measured in real time (minutes) is widely recognized. We developed an instrument that is based on supersonic-jet expansion and cooling, followed by resonantly enhanced multiphoton ionization (REMPI) into a mass spectrometer. This approach furnishes the dual selectivity of narrow-band tuned laser absorption and mass analysis. We initiated a spectroscopic characterization of the jet's collisional cooling behavior to optimize the instrument's sensitivity and selectivity, made measurements of several aromatic compounds (including polychlorinated dioxins) by use of a one-color REMPI scheme, and demonstrated a two-color excitation scheme. (C) 2001 Optical Society of America OCIS codes: 010.1120, 120.1740.

引用

页码：859 / 865

页数：7

共 9 条

[1] ROTATIONAL ANALYSIS OF 2600A ABSORPTION SYSTEM OF BENZENE [J].