量子电子学报, 2008, 25 (5): 0523, 网络出版: 2010-06-07
甲胺紫外光解REMPI质谱研究
UV photolysis REMPI mass spectrum of methylamine
光谱学 共振增强匀光光子电离 质谱 热焓 密度泛函 spectroscopy resonant enhanced multi-photon ionization mass spectrum enthalpy density functional theory
摘要
实验研究了233～243 nm激光波长范围内甲胺分子的REMPI质谱特性，在λ=240 nm处，分析了质谱中M30、M28、M15三种离子信号强度随激光能量的变化关系，得到他们电离的光强指数。理论上分别用密度泛函量化计算方法分析了不同解离通道热焓的变化。实验分析与理论结果相对比，对这三种离子进行了归属。
Abstract
Ultraviolet photolysis of methylamine was carried out by 233～243 nm laser. The resonant enhanced multi-photon ionization(REMPI)mass spectrum was obtained and studied. The laser power dependences for major peaks M30,M28,M15 were measured,and compared with calculated entropies density functional theory using quantum calculation. Thus those three major fragments were identified.
张霞, 孔祥和, 王召兵, 刘涛. 甲胺紫外光解REMPI质谱研究[J]. 量子电子学报, 2008, 25(5): 0523. ZHANG Xia, KONG Xiang-he, WANG Zhao-bing, LIU Tao. UV photolysis REMPI mass spectrum of methylamine[J]. Chinese Journal of Quantum Electronics, 2008, 25(5): 0523.
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