Supersonic jet multiphoton ionization mass spectrometry using nanosecond and femtosecond pulse lasers

被引：19
|
作者：
Matsumoto, J [1 ]
Lin, CH [1 ]
Imasaka, T [1 ]
机构：
[1] KYUSHU UNIV,FAC ENGN,DEPT CHEM SCI & TECHNOL,HAKOZAKI,FUKUOKA 812,JAPAN
来源：
ANALYTICA CHIMICA ACTA | 1997年 / 343卷 / 1-2期
关键词：
ionization efficiencies; femtosecond laser; mass spectra; polystyrene;
D O I：
10.1016/S0003-2670(96)00612-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The chemical species produced as a result of the thermal decomposition of polystyrene are multiphoton ionized by 500 fs and 15 ns laser pulses. Femtosecond laser ionization gave a more structured mass spectrum and a higher ionization efficiency. This is likely due to the fact that ionization occurs faster than intramolecular relaxation, e.g. photodecomposition, under femtosecond laser pulses.
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页码：129 / 133
页数：5
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