TL and EPR studies of Cu, Ag and P doped Li2B4O7phosphor
Makaleler > Tam Makale · 2006
Yazarlar: N Can, T Karali, P D Townsend, F Yildiz
Journal of Physics D: Applied Physics, Uluslararası, Wos, 2006, cilt 39, ss 2038-2043
DOI: 10.1088/0022-3727/39/10/009
Özet
Key characteristics of a newly prepared tissue-equivalent, highly sensitive thermoluminescence dosimeter, Li 2 B 4 O 7 :Cu,Ag,P, are presented. The material was developed at the Institute of Nuclear Sciences, Belgrade, in the form of sintered pellets. A new preparation procedure has greatly increased the sensitivity of the basic copper activated lithium borate and the glow curve of Li 2 B 4 O 7 : Cu,Ag,P consists of a well-defined main dosimetric peak situated at about 460–465 K with a sensitivity which is about four to five times higher than that of LiF : Mg,Ti (TLD-100). The exceptionally good response features of Li 2 B 4 O 7 : Cu,Ag,P are attributed to the incorporation of Cu as a dopant. Both low and high temperature emission spectra are presented and the origins of the various emission bands are considered. Additional data are provided from electron paramagnetic resonance measurements.