Absolute partial cross sections for electron‐impact ionization of CO2 from threshold to 1000 eV
Absolute partial cross sections for electron‐impact ionization of CO2 from threshold to 1000 eV
复制标题
CO2 从阈值到 1000 eV 电子轰击电离的绝对部分截面
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
R. Stebbings
中科院分区：
文献类型：
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作者：
H. C. Straub;B. Lindsay;K. A. Smith;R. Stebbings
报告了从阈值到1000 eV的电子能量下，CO2的电子碰撞电离产生CO+2、CO+、CO2+2、O+、C+、O2+和C2+的绝对部分截面。使用飞行时间质谱仪对产物离子进行质量分析，并使用位置敏感检测器进行检测，其输出提供了所有产物离子完全收集的明确证据。对于单电荷母离子，绝对截面值的总体不确定度为±3.5%，对于碎片和双电荷离子，总体不确定度略高。对于碎片离子横截面，所有，但一个以前的测量观察到显着低于本结果。
Absolute partial cross sections for the production of CO+2, CO+, CO2+2, O+, C+, O2+, and C2+ from electron‐impact ionization of CO2 are reported for electron energies from threshold to 1000 eV. The product ions are mass analyzed using a time‐of‐flight mass spectrometer and detected with a position‐sensitive detector whose output provides clear evidence that all product ions are completely collected. The overall uncertainty in the absolute cross section values is ±3.5% for singly charged parent ions and is slightly greater for fragment and doubly charged ions. For the fragment ion cross sections, all but one of the previous measurements are observed to be significantly lower than the present results.