2025/03/31 by Evgeny V. Krylov, Krylov, Evgeny V.
Chemistry · Decision Sciences · #Analytical chemistry methods development #Applied Physics (physics.app-ph) #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Mass Spectrometry Techniques and Applications #Scientific Measurement and Uncertainty Evaluation
paper · pdf · doi:10.48550/arxiv.2504.00262
openalex publication_date 2025/03/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A High-Pressure Ion Trap operating at pressure ~1 Torr is a core component of the portable hand-held mass-spectrometric gas analyzer. A comprehensive mathematical model of the HPIT is described in this paper. The influence of the instrumental parameters (gas composition, pressure, and temperature; applied voltages; ion trap size and geometry) and ion properties (mass, diffusion, and mobility) on the ion trap analytical parameters (mass-spectral peak position, height, and width) is examined. The model explained the difference between a high-pressure and regular low-pressure ion trap.