Abstract
This paper describes a variety of new directionally focusing TOFMS with equal momentum or equal energy acceleration and with no first order dependence on ion velocity in time of flight. This is achieved by combining linear drift spaces with magnetic or electrostatic sector fields. Mathematical expressions for velocity focusing are presented together with the requirements for directional focusing, and the characteristic values of a number of geometries which afford stigmatic imaging are given. With special configurations it is further possible to avoid any first order dependence of resolution on slit width. Finally, the resolution is also strongly influenced by the different means of ion production and acceleration. TOFMS with magnetic sector fields and equal momentum acceleration seem well suited for gas analysis together with the coincidence method, while the combination of a sputtering ion source with an electrostatic instrument is particularly promising for the analysis of solids and surfaces.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
