ELECTRON-IMPACT MASS SPECTROMETRY OF PTCDA MOLECULES IN THE GAS PHASE

被引：0
作者：
Zavilopulo, A. [1 ]
Shpenik, O. [1 ]
机构：
[1] Nat Acad Sci Ukraine, Inst Electron Phys, 21 Univ Ska Str, UA-88017 Uzhgorod, Ukraine
来源：
UKRAINIAN JOURNAL OF PHYSICS | 2019年 / 64卷 / 01期
关键词：
ionization; electron impact; fragment ions; energy of appearance; 9,10-BIS(PHENYLETHYNYL)ANTHRACENE; IONIZATION;
D O I：
10.15407/ujpe64.1.3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The complete and dissociative ionizations of a 3,4,9,10-perylene-tetracarboxylic-dianhydride (C24H8O6, PTCDA) molecule in the gas phase have been studied, by using electron-impact mass spectrometry in an energy interval of 5-90 eV. The molecule is found to decay into the following fragment ions: the perylene core C20H8+ and its half C10H4+, as well as CO+, CO2+, and O+ ions. The energy dependences of the cross-sections of the complete ionization of a PTCDA molecule and its fragment ions are analyzed. The energy of the complete ionization of a PTCDA molecule and the energies, at which its fragments appear, are determined. The temperature dependences of the formation of the most intensive fragment ions are measured, by using 80-eV electrons in a temperature interval of 320-500 K.
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页码：3 / 10
页数：8
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