Study on Multiphoton Ionization Mass Spectrometry Using a Few-Femtosecond Laser Pulse as an Ionization Source

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13726
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Analytical chemistry
• Research Institution: Kyushu University
• Principal Investigator: Imasaka Totaro 九州大学, 未来化学創造センター, 特命教授 (30127980)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: レーザー分光 / 分析化学 / 質量分析 / 光源技術 / 爆発物

Outline of Final Research Achievements

In this study, we developed a multiphoton ionization mass spectrometer using an ultraviolet ultrashort optical pulse as an ionization source for suppressing the fragment ions and for observing a molecular ion. For this purpose, we studied a method to compress the third harmonic emission of a Ti:sapphire laser. Finally, we could expand the band width of the spectrum and reduce the laser pulse width based on self phase modulation in a rare gas. This laser pulse was used in multiphoton ionization mass spectrometry to study the advantage of this method. This type of approach would be useful for studies of ultrafast phenomena as an advanced spectrometric technique.

Free Research Field

分析化学