CHARGE NEUTRALISATION
The AXIS Nova charge neutraliser is based upon proven market leading technology used in over 200 AXIS spectrometers. The use of a coaxial low energy electron source within the field of the magnetic lens ensures that the ultimate base pressure of the spectrometer is maintained during analysis of insulating samples in contrast to other neutralisation systems which require an additional source of Ar⁺ ions. The advanced design of the Kratos neutraliser discussed in technical note MO222 ensures that the system is self-regulating and works effectively on all classes of insulating materials including fibres, powders and thin films. When used in conjunction with the monochromatic X-ray source, spectra with unrivalled energy resolution may be generated from electrically insulating materials as demonstrated by data showing FWHM of <0.68eV on the ester component in polyethylene terephthalate (PET).

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