Investigating the thermally transferred optically stimulated luminescence source trap in fired geological quartz
Yükleniyor...
Dosyalar
Tarih
2014-03
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The pre-dosed thermoluminescence (TL) emission of quartz has been found to be useful in retrospective dosimetry and archaeometry. Though the pre-dosed optically stimulated luminescence (OSL) and emissions have been reported to be similar, the former has been found to be un-reliable for the equivalent dose estimation. As this measurement protocol involves thermal heating at around 400 degrees C, the work reported in this paper investigated the influence of this heating on the OSL using fired specimens from various regions. The results suggested that the discrepancy in the behaviour of two emissions is caused by the presence of the thermally transferred optically stimulated luminescence (TT-OSL) induced by thermal-activation involved in the pre-dose treatment. This transferred signal was observed to be very significant in the case of samples containing a prominent higher-temperature TL peak at similar to 375 degrees C. The characterization of this signal based on (i) the nature of the glow curves, (ii) thermal-annealing of the OSL trap, (iii) observation of the TT-OSL, (iv) bleaching of the source trap and (v) the correlation between TL and OSL seems to suggest that the trap corresponding to this TL peak is the source trap in the TT-OSL emission mechanism.
Açıklama
Anahtar Kelimeler
TT-OSL, TL, OSL, Quartz, Deep trap, Pre-dose, Osl signals, Retrospective dosimetry, Sensitivity changes, Predose phenomenon, Thermoluminescence, Dependence, Components, Protocol, Charges
Kaynak
Radiation Measurements
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
62
Sayı
Künye
Koul, D. K., Patil, P. G., Oniya, E. O., & Polymeris, G. S. (2014). Investigating the thermally transferred optically stimulated luminescence source trap in fired geological quartz. Radiation Measurements, 62, 60-70. doi:10.1016/j.radmeas.2014.01.014
