Development of Tunable Picosecond Dye Laser for Multiphoton Ionization of Dioxin Precursors in Supersonic Jet/Time-of-Flight Mass Spectrometry

A distributed-feedback dye laser has been developed for achieving the efficient multiphoton ionization of chlorobenzene and dichlorobenzene, that is, precursor molecules of dioxins. This tunable picosecond laser with a narrow spectral line width, that is, a nearly transform-limited pulse, provides a...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2001-09, Vol.73 (18), p.4417-4421
Main Authors: Yoshida, Noriyoshi, Hirakawa, Yasuyuki, Imasaka, Totaro
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Analytical chemistry
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Chemistry
Chlorobenzenes - analysis
Dioxins
Dioxins - analysis
Ecotoxicology, biological effects of pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General aspects
Ions
Lasers
Mass Spectrometry - methods
Spectrometric and optical methods
Spectrum analysis
Time Factors
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Summary:A distributed-feedback dye laser has been developed for achieving the efficient multiphoton ionization of chlorobenzene and dichlorobenzene, that is, precursor molecules of dioxins. This tunable picosecond laser with a narrow spectral line width, that is, a nearly transform-limited pulse, provides a more efficient ionization than the nanosecond laser, which is currently in use in supersonic jet spectrometry. The advantage of picosecond over nanosecond and femtosecond lasers is also discussed on the basis of the theoretical model reported in a previous paper.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac010187s