Development of photofragment imaging technique of mass-selected cluster ions for the study of dissociation dynamicss

2014 Fiscal Year Final Research Report

• Project/Area Number: 25620007
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Tohoku University
• Principal Investigator: MISAIZU Fuminori 東北大学, 理学(系)研究科(研究院), 教授 (20219611)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: クラスター / 光解離反応 / 質量分析 / 画像観測 / 装置開発研究 / 電子励起状態 / 結合エネルギー

Outline of Final Research Achievements

In this study, we have developed a technique of obtaining images of velocity and angular distributions of photofragment ions from cluster ions, which are important as microscopic models of nanomaterials. We have applied this technique to unveil ultraviolet photodissociation dynamics of gas-phase complex monocations of magnesium-argon and magnesium-fluoromethane. We found that both complexes exhibit fast dissociation just after electronic excitation which is localized on the magnesium monocation. In addition, we have determined a ground-state binding energy for the Mg-Ar complex from this measurement.

Free Research Field

化学