Author/Authors :
Peter Csatlos، نويسنده , , M. and Krasznahorkay، نويسنده , , A. and Bacelar، نويسنده , , J.C.S. and Ba?anda، نويسنده , , A. and Przygoda، نويسنده , , W. and Schadmand، نويسنده , , S. and de Voigt، نويسنده , , M.J.A.، نويسنده ,
Abstract :
The energy response of a novel composite Ge+BGO spectrometer has been measured for high-energy (4–20 MeV) photons. The spectrometer consists of a cooled Ge solid state central detector surrounded by a single BGO scintillator crystal without having interfering materials in between. Good energy resolution (≈1.7%) combined with a considerable photopeak efficiency (ε≈17%) have been obtained at 15.1 MeV in “adding-back” mode. GEANT Monte-Carlo code simulations reproduce the measured response rather well and show a very good suppression factor against neutrons (≥100) and also against cosmic rays (≥3000) for this composite spectrometer.
