Gas Composition in Vacua
Apr 15 2014
Hiden Analytical (UK) offer an extensive range of quadrupole residual gas analysers for diverse vacuum applications through the pressure range from millibar through to extreme high vacuum (XHV). The catalogue items are supplemented by a custom-engineering design service for experiment-specific requirements including in-vacuum cooling and heating, probe insertion distance and remote in-vacuum mounting.
Typical mass ranges of 1:50amu to 1:300amu accommodate most gaseous and vapour species, with alternative mass ranges to 1000amu offered for specialised applications. Analogue and pulse ion counting detectors are selectable to optimise performance for widest dynamic range of 10 decades, fastest measurement rate to 500 samples per second and highest sensitivity to 5x10E-16 millibar. Ion source options are configured for general analysis, for molecular beam applications or for minimal degas rates for UHV/XHV applications.
The single-stage mass filters are used for many general applications, with the 3F-series triple-stage mass filter being used for the most demanding applications requiring maximum performance in terms of both mass resolution and abundance sensitivity.
All operating parameters are software integrated giving full control of mass resolution, ionisation current and ionisation energies, with the soft ionisation feature being used for simplification of complex molecular fragmentation spectra.
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