Hiden TPD

Temperature programmed desorption (TPD) is a powerful tool to study the temperature desorption of molecules from a surface by heating the sample in a linear ramp rate. This technique is used to measure the thermal stability of a material, enabling the study of adsorbate and material decomposition and desorption, adsorption kinetics, surface coverage, and adsorption energies.


The Hiden TPD workstation located at Johnson Hall is a complete experimental system for analysis of thermal desorption products by ultrahigh vacuum (UHV) TPD/TDS. The TPD Workstation features a multiport UHV chamber (<5x10-9 Torr) with heated sample stage to 1000 °C.  Temperature control is achieved by PID coupled to a high precision triple filter quadrupole mass spectrometer with digital pulse ion counting detector for ultimate sensitivity and time resolution.

TPD Capabilities:

  • Analysis performed at ultrahigh vacuum (UHV).
  • Preferred sample size is 10 mm x 10 mm x 1 mm.
  • Temperature range is room temp. (RT) to 1000 °C.
  • PID Controller coupled to high precision triple filter quadrupole mass spectrometer with digital pulse ion counting detector for high sensitivity and time resolution.
  • Load-lock chamber for efficient sample exchange and throughput.
  • Linear sample transfer and heater positioning mechanisms for streamlined operation.
  • Multiport UHV chamber for attachment of additional instrumentation (e.g. low pressure gas dosing).
  • Low energy electron gun (Kimball Physics ELG-2 gun with EGPS-1022 power supply).
  • Integrated Software control of experimental protocols.

 

When publishing research involving experiments conducted at the APSCL, please include the following text in the acknowledgements: “Part of this research was conducted at the Northwest Nanotechnology Infrastructure, a National Nanotechnology Coordinated Infrastructure site at Oregon State University which is supported in part by the National Science Foundation (grant NNCI-2025489) and Oregon State University.”