Simulation of the stationary distributions of ions in radiofrequency low-vacuum traps with regard to the coulomb interaction

The paper presents main peculiarities of implementation and testing of an algorithm based on the variational approach to the problem of simulating the stationary distributions of ions in the radiofrequency, low-vacuum ion traps with taking into consideration the Coulomb interaction and interaction with buffer gas. A good agreement between the results of numerical modeling and analytical results obtained earlier by other authors for simpler models is attained. The employment of the software that has been developed in the course of this work enables studying the structure of ion ensembles in the radiofrequency ion traps of different types and obtaining the results being of interest for high-resolution mass spectrometry. The algorithm allows a natural generalization to three-dimensional case.