Mass Spectrometry & Spectroscopy 11 A Better Way to Profile your Ion Beam for More Accurate Analysis


Photonis has combined two of our superior detection and analysis technologies into a new digital ion beam profiling unit. The new Ion Beam Profiler combines a large Microchannel plate (up to 120mm) in a complete assembly with the Photonis Nocturn, a high-resolution digital CMOS low-light camera which is immune to sudden light damage. Together these highly sensitive imaging components offer a detailed image of your instrument’s ion beam, allowing system designers to identify and correct any areas of ion loss that had previously been overlooked. This new diagnostic tool allows the instrument to be designed to maximise the amount of ions collected for a superior analysis.


Tracing the Path


Ion optics modelling software is often used to design and predict the ion path within a mass spectrometer. The conventional method for aligning an ion beam consists of scanning the beam over a Faraday cup or electron multiplier, integrating the current, and finding the settings which produce the highest signal. However, ion trajectories can be influenced by many factors which are not considered in the model. Efficiently transporting ions from the source through the mass filter is critical for maximising instrument sensitivity.


The new Photonis Ion Beam Profiler can visualise the location of any charged particle (Ion, Electron, UV, photon or soft X-Ray), enabling the instrument designer to ensure all available signal ions are collected. The unit can capture images from the phosphor screen at up to 100 frames per second and store them on a PC for collaboration and comparison testing. A strobe trigger is available to synchronise the camera to a specific event.


Versatile Applications


The new Ion Beam Profiling unit can be used in wide range of applications, including ion optic model verification, Imaging TOF, VUV Spectroscopy and high energy physics as well as ion beam profiling. The unit can be custom-fit with a specific microchannel plate and electro-optic housing to fit your unique application.


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