Thermal Desorption Spectroscopy (TDS)

Our ultra-high-vacuum thermal desorption spectroscopy system enables the quantitative analysis of hydrogen in metallic materials. By monitoring hydrogen release during controlled heating or isothermal desorption, the technique can determine hydrogen content, investigate trapping behaviour and measure hydrogen diffusivity over a wide temperature range.

Hydrogen quantification

• Heating range from −100 to 1000 °C

• Sensitivity down to approximately 0.01 wppm

• Measurement of total hydrogen content

• Differentiation between lattice, diffusible and trapped hydrogen populations

• Cryogenic stage for measuring lattice concentration

Hydrogen trapping analysis

• Controlled heating rates from 1 to 50 °C/min

• Identification and comparison of hydrogen desorption peaks

• Characterisation of hydrogen-trapping behaviour

• Activation-energy analysis using multiple heating rates

Hydrogen diffusivity measurements

• Isothermal desorption experiments between −100 and 400 °C

• Determination of effective hydrogen diffusivity

• Temperature-dependent diffusion measurements

The system is calibrated for both hydrogen and deuterium and can also be configured to monitor other gases released from the sample.