The Atomic Defectscope has been installed on the beamline dedicated to materials science analysis on the GBAR development platform. It benefits from the positron beam produced by the first non-radioactive positron source, developed during the SOPHI ANR and SELMA ASTRE projects. Positron annihilation Doppler broadening spectroscopy is used to characterize defects in the studied matter.
![](http://www.posithot.com/wp-content/uploads/2018/09/IMG_4067-300x225.jpg)
The Atomic Defautscope was jointly funded by the Departmental Council of Essonne, CEA Irfu, BPI France and POSITHÔT.