Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 17, Issue 14, Pages 9060-9067Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp06065b
Keywords
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Funding
- National Natural Science Foundation of China [21205005, 21475010]
- 1000 plan and MOST Instrumentation Program of China [2011YQ0900502]
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In this study, an energetic hard-sphere ion-neutral collision model was proposed to bridge-link ion collision cross section (CCS) with the image current collected from a high-resolution Fourier transform ion cyclotron resonance (FT-ICR) cell. By investigating the nonlinear effects induced by high-order electric fields and image charge forces, the energetic hard-sphere collision model was validated through experiments. Suitable application regions for the energetic hard-sphere collision model, as well as for the conventional Langevin and hard-sphere collision models, were also discussed. The energetic hard-sphere collision model was applied in the extraction of ion CCSs from high-resolution FT-ICR mass spectra. Discussions in the present study also apply to FT-Orbitraps and FT-quadrupole ion traps.
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