Dose response and fading studies on de-proteinated tooth enamel after de-convolution using the sum of general order kinetics and a component for tunnelling recombination

Meric N., Yuce U. R., ŞAHİNER E., Damianidis A., Polymeris G. S.

RADIATION MEASUREMENTS, cilt.81, ss.257-261, 2015 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 81
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.radmeas.2014.12.003
  • Dergi Adı: RADIATION MEASUREMENTS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.257-261
  • Anahtar Kelimeler: OSL, Tooth enamel, Tunnelling, De-convolution, Fading, Dose response, OPTICALLY STIMULATED LUMINESCENCE, COMPUTERIZED CURVE DECONVOLUTION, EPR-DOSIMETRY, DENTAL ENAMEL, RETROSPECTIVE DOSIMETRY, OSL, APATITE, SIGNAL, EXPOSURE, QUARTZ
  • Ankara Üniversitesi Adresli: Evet

Özet

The present study reports on the results of dose response and fading for the case of blue stimulated OSL signals from tooth enamel samples. These samples have been previously subjected to two different de-proteinization procedures, after applying hydrazine and sodium hydroxide. The OSL signal, when quantified based on the conventional way of OSL analysis, namely the use of the initial 5 s of the signal minus the intensity of the last 5 s as a background signal, yields bad signal to noise ratio as well as instability. The application of the de-convolution procedure including two components, one of general order kinetics and one of tunnelling recombination results to a fast OSL component with enhanced signal to noise ratio, isolating thus the fading component and yielding a linear dose response throughout the entire dose range of the present study. Finally, the physical meaningfulness of the fitting parameters for the tunnelling component, especially the dimensionless parameter representing the normalized donor -acceptor density rho' is also discussed. (C) 2014 Elsevier Ltd. All rights reserved.