The VG 5400 has been the mainstay of the noble gas community for the last 25 years. It comes equipped with one faraday cup analyser and an electron multiplier allowing it to produce high sensitivity measurements of all noble gas (He, Ne, Ar, Kr and Xe) isotopes. Our VG has been regularly upgraded in terms of hardware and software and is still the workhorse of the G69 noble gas lab.
The VG has been designed for high precision measurements of noble gases in both terrestrial and extra-terrestrial samples. The spectrometer is coupled to a manual extraction bench which is fitted with 2 getters (hot and cold) in order to make sure the spectrometer is clean and free from contamination. The noble gases within the samples are released by either step heating on one of the two attached furnaces or by crushing the samples with a magnetic crusher. Released noble gases are then separated on a liquid helium cryotrap, and analysed individually by utilisation of peak jumping mode.
At present the VG is used in a whole host of research applications including dating volcanic rocks by the analysis of He isotopes for U-Th/He dating, dating cosmogenic exposure ages of lunar meteorites and Apollo samples, and tracing volatiles throughout the Earth’s mantle.