Effect of detector crystal size on Compton suppression factors

Kaya S., Çelik N., Gök A., ÇEVİK U.

Radiation Effects and Defects in Solids, cilt.178, sa.11-12, ss.1449-1462, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 178 Sayı: 11-12
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1080/10420150.2023.2258432
  • Dergi Adı: Radiation Effects and Defects in Solids
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1449-1462
  • Anahtar Kelimeler: Compton suppression factor, EGS4 code, HPGe detector
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

The geometrical parameters which affect the suppression factor for an HPGe (High Purity Germanium)-NaI Compton suppression spectrometer were studied by a Monte Carlo simulation with the EGS4 system. The spectrums were crated for 5 energy values ranging from 200 keV to 2 MeV. Compton suppression factors (CSFs), the parameters characterizing the system performance, were calculated for different HPGe crystal parameters. It was observed that to obtain better Compton suppressed factors, a laboratory must choose as small HPGe crystal as possible for energy values up to 400 keV. However, for higher energies up to 2 MeV, larger HPGe crystals provide better Compton suppression systems. These findings suggest that the choice of HPGe crystal size can significantly impact the performance of a Compton suppression spectrometer and should be carefully considered in its design and optimization.