Modeling a gamma spectroscopy system and predicting spectra with Geant-4

Daǧistan Şahin, Kenan Ünlü

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


An activity predictor software was previously developed to foresee activities, exposure rates and gamma spectra of activated samples for Radiation Science and Engineering Center (RSEC), Penn State Breazeale Reactor (PSBR), Neutron Activation Analysis (NAA) measurements. With Activity Predictor it has been demonstrated that the predicted spectra were less than satisfactory. In order to obtain better predicted spectra, a new detailed model for the RSEC NAA spectroscopy system with High Purity Germanium (HPGe) detector is developed using Geant-4. The model was validated with a National Bureau of Standards certified 60Co source and tree activated high purity samples at PSBR. The predicted spectra agreed well with measured spectra. Error in net photo peak area values were 8.6-33.6%. Along with the previously developed activity predictor software, this new model in Geant-4 provided realistic spectra prediction for NAA experiments at RSEC PSBR.

Original languageEnglish (US)
Pages (from-to)167-172
Number of pages6
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number1
StatePublished - Oct 2009

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


Dive into the research topics of 'Modeling a gamma spectroscopy system and predicting spectra with Geant-4'. Together they form a unique fingerprint.

Cite this