A Study on TL Properties of Natural Dolomite Mineral Irradiated with Beta Particles


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Akça S.

TURKISH PHYSICAL SOCIETY 35th INTERNATIONAL PHYSICS CONGRESS (TPS35), Muğla, Türkiye, 4 - 08 Eylül 2019, cilt.01, no.9, ss.482-490

  • Cilt numarası: 01
  • Basıldığı Şehir: Muğla
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.482-490

Özet

The present study aims to reveal thermoluminescence (TL) features of natural dolomite mineral. In the first stage, the

proper filter was selected as WBB with HR of 2 oCs-1 from RT to 450 °C. The results obtained from TL glow curves showed that

the curves were composed of two peak maxima (pm) located at 102 and 252 C at doses between 0.11-10 Gy. When examined the

dose dependence of each peak maxima, each of them exhibited a good linear response. The mineral was found to be reusable within

8% and 16% for peak 1 and 2, respectively. The effects of the HRs in the range of 0.5-10 Cs-1 on TL were researched taking into

account the change of the FWHM, Tm, Im and peak area vs HR for each pm and observed an anomalous case increasing TL intensity

with HR. The Tm-Tstop experiment and CGCD analyses performed showed that the curves consist of at least 8 superposition peaks.

The Ea values are in good agreement at both methods and found to be 0.65-1.08 (p1) and 1.4-1.71 eV (p2) applying CGCD method.