摘要
The absolute partial and total cross sections for electron impact ionization of carbon monoxide are reported for electron energies from 350 eV to 8000 eV.The product ions(CO^(+),C^(+),O^(+),CO^(2+),C^(2+),and O^(2+))are measured by employing an ion imaging mass spectrometer and two ion-pair dissociation channels(C^(+)+O^(+)and C^(2+)+O^(+))are identified.The absolute cross sections for producing individual ions and their total,as well as for the ion-pair dissociation channels are obtained by normalizing the data of CO^(+)to that of Ar^(+)from CO-Ar mixture target with a fixed 1:1 ratio.The overall errors are evaluated by considering various kinds of uncertainties.A comprehensive comparison is made with the available data,which shows a good agreement with each other over the energy ranges that are overlapped.This work presents new cross-section data with electron energies above 1000 eV.
作者
Taj Wali Khan
黄伟哲
王恩亮
单旭
陈向军
Taj Wali Khan;Weizhe Huang;Enliang Wang;Xu Shan†;Xiangjun Chen(Hefei National Research Center of Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China)
基金
Project supported by the National Key Research and Development Program of China (Grant No.2022YFA1602502)
the National Natural Science Foundation of China (Grant No.12127804)
the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos.XDB34000000)。