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THE APPLICATION OF CALCULATION OF ION SOURCE SYSTEMS AND ION ENERGY SPREAD TO SOME OF THE PROBLEMS OF ION-MOLECULE INTERACTIONS

机译:离子源系统计算及离子能量扩散在离子分子相互作用问题中的应用

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The calculations described in this report were designed to support an experimental attempt to measure the specific reaction rate for typical ion-molecule reactions as a function of reactant ion energy. These calculations show that it is possible to obtain a small spread in the kinetic energy of the ions formed and then to measure the energy dependent rate constant. The source residence time for ions in the mass spectrometer used is calculated, and the energy spread of the ion beam produced by a 20 nanosecond ionizing pulse was then computed for many conceivable experimental conditions.

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