title: Letter: A method for the chromatic aberration correction of a laser time of-flight mass analyzer.
abstract: The new ion-optical system of the laser time-of-flight (TOF) mass spectrometer on the basis of two tandem wedge-shape reflectors has been offered and implemented. A new method of correcting chromatic aberration by the ion energy was proposed that used a wire electrode unit with adjustable potentials. This unit allows one to adjust the local TOF of the ions in a narrow energy range ± (1-2)% within the total ion packet with an energy spread of ± 20%. The method reduces the duration of the ion packets by up to 1.5ns, which enables us to obtain the restriction of resolution at a level not worse than R ~ 10500 for a TOF ~35 µs. The aim of the project is to increase the separation of isobaric ions to improve the limit of detection of the laser TOF-MS for the analysis of high-purity samples.
authors.affiliation: National Research Nuclear University MEPHI Kashirskoe shosse 31, Moscow, 115409, Russian Fereration.
authors.forename: Elizaveta A
authors.initials: EA
authors.lastname: Sysoeva
authors.affiliation: National Research Nuclear University MEPHI Kashirskoe shosse 31, Moscow, 115409, Russian Fereration. sysoev@mephi.ru.
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Sysoev