COMPAS

Combined Methods for Positron Annihilation Spectroscopy

Positron annihilation lifetime spectroscopy is a powerful method for non-destructive testing with atomic resolution. Defect structures in solids like single vacancies or clusters as well as the free volume in polymers or pore networks can be studied. The obtained information about the relative fraction and development of defect structures are useful for the characterisation and prediction of material fatigue. You are able to study the structural changes in metals, polymers and inorganic materials. Especially open and closed porous structures with dimensions smaller than 20 nm can be studied efficiently using positron annihilation lifetime spectroscopy. The very high sensitivity to small changes in the microstructure is unique compared to other standard methods. In addition, the obtained information is not only locally restricted but characteristic for an extended sample volume.


 

 

WHAT WE OFFER

Our skilled and qualified team offers a comprehensive service in the field of non-destructive material characterization and individual solutions. We use a sophisticated measuring setup that combines excellent resolution with short measurement times. 

POTENTIAL APPLICATIONS

  • Predictions of material fatigue in metals, alloys and polymers
  • Influence of material deformation on the microstructure of solids
  • Quality control and optimisation of innovative materials
  • Determination of the free volume as well as the glass transition temperature in polymers
  • Pore size distribution in open and closed systems