The process of ion-packet broadening in a longitudinal laser spectrometer of ion mobility is studied. The contributions of the diffusion, Coulomb, and other broadening mechanisms are compared. The resolution of the developed spectrometer was measured (R ~ 45) in atmospheres of both purified air and pure nitrogen. The dependence of the spectrometer resolution on the drift voltage was studied. The recorded spectra of a number of molecules of explosives with an extremely low pressure of saturated vapors indicate a high sensitivity of the developed spectrometer (no worse than 10{sup}(-14) g/cm{sup}3).
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机译：研究了离子迁移纵向激光光谱仪中离子包的扩宽过程。比较了扩散，库仑和其他扩展机制的贡献。在纯净的空气和纯净的氮气中，测量了开发的光谱仪的分辨率（R〜45）。研究了光谱仪分辨率对漂移电压的依赖性。饱和蒸气压极低的许多炸药分子的记录光谱表明，已开发的光谱仪具有很高的灵敏度（不低于10 {sup}（-14）g / cm {sup} 3）。
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