title: Some aspects of space-charge effect calculation in high-resolution mass spectrometry.
abstract: A variational 3D approach to the problem of simulating stationary distributions of ions in the radiofrequency low-vacuum ion traps with regard to Coulomb interaction and collisions of ions with buffer gas molecules is proposed. The software developed in the course of this work is employed to study the structure of stationary ion ensembles in the radiofrequency ion traps of various types. The effect of high-frequency and constant voltages, space-charge density, and buffer gas temperature on the formation of stationary distributions in the radiofrequency ion traps and their limiting capacitance is investigated. It is shown that the use of electrodes with a constant voltage in the presence of high enough ion density allows pre-filtering of ions directly in a high-frequency trap-accumulator.
authors: Thermo Fisher Scientific (Bremen) GmbH, Hanna-Kunath-Str. 11, Bremen, 28199 Germany.
authors: D
authors: D
authors: Grinfeld
authors: Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia; ООО "Аdvanced Energy Technologies", ul. Novaya 100, Skolkovo, Moscow region, 143025 Russia. Electronic address: igorkopaev@gmail.com.
authors: I
authors: I
authors: Kopaev
authors: Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, P.O.B. 56 Chernogolovka, Moscow region, 142432 Russia.
authors: M
authors: M
authors: Skoblin
authors: Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991 Russia.
authors: M
authors: M
authors: Monastyrskiy
authors: Thermo Fisher Scientific (Bremen) GmbH, Hanna-Kunath-Str. 11, Bremen, 28199 Germany.
authors: A
authors: A
authors: Makarov
authors: ООО "Аdvanced Energy Technologies", ul. Novaya 100, Skolkovo, Moscow region, 143025 Russia; Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, P.O.B. 56 Chernogolovka, Moscow region, 142432 Russia.
authors: S
authors: S
authors: Alimpiev
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D025802:Electric Capacitance; D004867:Equipment Design; D005740:Gases / Q000737:chemistry; D007477:Ions / Q000737:chemistry*; D013058:Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D008956:Models, Chemical; D055672:Static Electricity
chemical_list: D005740:Gases; D007477:Ions
keywords: Buffer gas; Capacitance; Coulomb interaction; Ion trap; Space charge; Stationary distribution