Mass Resolved Photoionization and Photodissociation of Dimethylamine with Synchrotron Radiation

Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (5): 825-829. Previous Articles Next Articles

Original Articles

二甲胺同步辐射光电离解离机理的质谱研究

胡正发;王振亚;周士康;王娟;盛六四;张允武

中国科学院安徽光学精密机械研究所环境光谱学实验室,合肥(230031);中国科学技术大学,合肥(230026)

发布日期:2002-05-15

Mass Resolved Photoionization and Photodissociation of Dimethylamine with Synchrotron Radiation

Hu Zhengfa;Wang Zhenya;Zhou Shikang;Wang Juan;Sheng Liusi;Zhang Yunwu

Environment Spectroscopy Laboratory, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Hefei(230031);National Synchrotron Radiation Laboratory, University of science and Technology of China,Hefei(230026)

Published:2002-05-15

Abstract

Photoionization and photodissociation of dimethylamine (DMA), by using synchrotron radiation combining with time of flight-mass spectroscopy (TOF-MS), is performed under supersonic molecular beam. Four main ions of (CH_3)_2NH·~+, CH_3NH~+CH_2, CH_2NH_2~+ and CHNH~+ are observed, at appearance energy (AE) of 8.26, 9.52, 11.93 and 11.27 eV respectively. DMA's IP = 8.26 eV and heat of formation of parent ion Δ_fH~o = 778.55 kJ/mol obtained are in well agreement with recommended values. The photo fragmentation mechanism is also discussed.

Key words: RADIATION, PHOTOIONIZATION, TIME-OFF FLIGHT MASS SPECTROMETRY, DIMETHYLAMINE

CLC Number:

O644

Cite this article

Hu Zhengfa;Wang Zhenya;Zhou Shikang;Wang Juan;Sheng Liusi;Zhang Yunwu. Mass Resolved Photoionization and Photodissociation of Dimethylamine with Synchrotron Radiation[J]. Acta Chimica Sinica, 2002, 60(5): 825-829.

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二甲胺同步辐射光电离解离机理的质谱研究

Mass Resolved Photoionization and Photodissociation of Dimethylamine with Synchrotron Radiation

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