Development of a new reflection high-energy positron diffractometer at NEPOMUC

Effect of neutron–photon converter materials (Cd, Gd, and Sm) on the positron production in a reactor-based slow positron beamline

“…Positrons are useful to detect vacancy-type defects in thin films and near the surface of materials with high sensitivity [1,2,3,4]. An intense slow positron beam enables the use of positrons in advanced measurement techniques beyond conventional positron annihilation measurements, such as scanning positron microscopy [5,6,7,8,9] and total reflection highenergy positron diffraction [10,11,12]. Therefore, the operation and/or the new construction of intense slow positron beam facilities using nuclear reactors as a positron source are being promoted in many countries [13,14,15,16,17,18,19,20,21,22,23,24].…”