Development and characterization of a multiple-coincidence ion-momentum imaging spectrometer.

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Abstract

The design and performance of a high-resolution momentum-imaging spectrometer for ions which is optimized for experiments using synchrotron radiation is presented. High collection efficiency is achieved by a focusing electrostatic lens; a long drift tube improves mass resolution and a position-sensitive detector enables measurement of the transverse momentum of ions. The optimisation of the lens for particle momentum measurement at the highest resolution is described. We discuss the overall performance of the spectrometer and present examples demonstrating the momentum resolution for both kinetics and for angular measurements in molecular fragmentation for carbon monoxide and fullerenes. Examples are presented that confirm that complete space-time focussing is possible for a two-field three-dimensional imaging spectrometer.

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  • Atom and Molecular Physics and Optics
Original languageEnglish
Article number123113
JournalReview of Scientific Instruments
Volume84
Issue number12
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes

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