Correction methodology for the spectral interfering gamma-rays overlapping to the analytical peaks used in the analysis of Th-232

YÜCEL H., Kose E., Esen A. N., Bor D.

APPLIED RADIATION AND ISOTOPES, cilt.69, sa.6, ss.890-897, 2011 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 69 Sayı: 6
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.apradiso.2011.02.027
  • Dergi Adı: APPLIED RADIATION AND ISOTOPES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.890-897
  • Anahtar Kelimeler: Gamma-ray spectrometry, Spectral interference, True coincidence summing (TCS), Correction, COINCIDENCE SUMMING CORRECTIONS, U-238
  • Ankara Üniversitesi Adresli: Evet

Özet

In the gamma-ray spectrometric analysis of the radionuclides, a correction factor is generally required for the spectral interfering gamma-rays in determining the net areas of the analytical peaks because some interfering gamma-rays often might contribute to the analytical peaks of interest. In present study, a correction methodology for the spectral interfering gamma-rays (CSI) is described. In particular, in the analysis of Th-232 contained in samples, the interfering gamma-rays due to Ra-226, U-235, U-238 and their decay products often overlap to the peaks of interest from Th-232 decay products, and vise versa. For the validation of the proposed CSI method, several certified reference materials (CRM) containing U and Th were measured by using a 76.5% efficient n-type Ge detector.