Tech Data

Appearance Potentials

Ionisation Energies of Simple Inorganic and Organic Molecules.

Hiden quadrupole mass-spectrometers can simplify the analysis of complex cracking patterns from multi-component gas / vapour mixtures by using “Soft Ionisation”. This method provides controlled ionisation to facilitate mass analysis and species discrimination / identification. The table lists the appearance potential or first ionisation energies of simple inorganic and organic molecules. Read more…

Cracking Patterns

Table showing a selection of cracking patterns for common gas/vapours. Read more…

A SIMS Primer

An introduction to the SIMS surface analysis technique.

Secondary Ion Mass Spectrometry is the most sensitive surface analysis technique providing quantifiable data to the ppb level and surface specificity to the uppermost monolayer. It can be used to analyse most solid vacuum compatible materials including metals, semiconductors, ceramics, polymers and biological material. Read more…

EQP : A Mass and Energy Analyser for Plasma Diagnostics

A poster detailing the EQP mass / energy  plasma ion analyser.

The EQP mass spectrometer combines an electrostatic sector energy analyser with a high performance quadrupole mass filter in an instrument designed for plasma diagnostics. The EQP can acquire the mass spectra and energy distributions of neutrals, radicals and ions (positive and negative). Trends in intensity can be plotted against time. Fast acquisition modes mean that transients and afterglows can be studied. Read more…

Quadrupole Mass Spectrometer Concepts – How an RGA works

A presentation with introduction and technical information detailing how a residual gas analyser works.

A useful guide to RGA operation.

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Mass Spectra Interpretation – Hydrocarbon Peak Identification

A data sheet with mass peaks of  common hydrocarbon fragments and compounds

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