偶氮苯的同步辐射光电离研究

用同步辐射光电离质谱与符合技术的相结合测定了偶氮苯光电离效率谱，获得了该分子的电离势，导出了分子和分子离子中某些键的解离能以自由基Ｃ６Ｈ５Ｎ２的电离势。测得了不同光子能量激发下的质谱图，并对不同能量时偶氮苯的解离电离方式进行了分析。

Photoionization Studies of Azobenzene Using Synchrotron Radiation

The photoionization with synchrotron radiation (SR), a time—of-flight mas spectrometer and the colncidenee technique are combined to measure the photoionization efficiency spectra of azobenzene (AB). With these photoionization efficiency spectra, the ionization potential of AB and the appearance potentials of the major ionic fragments were obtained. From these results and the energy relation in the dissociative photoionization process, the dissociation energies of AB and AB and the ionization potential of radical C6HsN2 were derived. The photoionization mass spectra of AB using various SR photon energy were recorded. The most possible passways of the dissociative photoionization were analyzed.