Silver being a multivalent interacts with oxygen and
materializes into different phases such as Ag2O, AgO, Ag3O4, Ag4O3, and Ag2O3.
Borate glasses are very interesting amorphous materials considering their
specific structure and physical properties, lithium borate is rather new in TL
dosimetry compared to lithium tetraborate. Thermoluminescent (TL) dosimetry is
an important technology utilized to measure the radiation exposure of this
synthetic borate. This work investigates the properties of glow curve of lithium
Strontium borate doped sliver glass (LSBO: Ag), subjected to Co-60 gamma
irradiation. The glass samples were prepared in different compositions based on
15%Li2CO3 + 2%SrCO3(83 - x) H3BO3 + xAgNO3 , where x =
0.001,0.003,0.005,0.007,0.009 and 0.01mol% by traditional melting quenching
method at temperature 1300o C for 1 hour. The structural pattern of glass
samples has been identified by X-ray diffraction. The XRD pattern shows that
the samples are glasses since there is broader peak appearing in the spectral
pattern. FESEM images verify the homogeneous and transmitting surface
morphology of all samples. Stable glasses with Hurby parameter ~ 0.5 are
achieved. EDX spectra determine the accurate elemental compositions in the
samples. Physical properties are determined in terms of glass density, molar
volume, polaron radius, inter-nuclear distance, and ion concentration. Glass
density is found to increase from 2.45 to 2.46 g cm-1 after addition of AgNO3
concentration. The TL intensity at different compositions of lithium borate
doped sliver glass after exposed to 50 Gy Co-60 gamma-rays is presented. The
results clearly show that the highest TL intensity is found in glass
composition of 0.09 mol% of AgNO3.
Author(s) Details:
Hayder. K. Obayes,
Department of Physics Sciences, Faculty of Science, Universiti
Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia, Department of Physics,
University of Al-Qadisiya, Iraq and Directorate General of Education in Babylon
Governorate, Ministry of Education, Baghdad, 51001, Iraq.
H.
Wagiran,
Department
of Physics Sciences, Faculty of Science, Universiti Teknologi Malaysia, UTM
Johor Bahru, Johor, Malaysia.
R. Hussin,
Department of Physics Sciences, Faculty of Science, Universiti
Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia.
M. A Saeed,
Department of Physics Sciences, Faculty of Science, Universiti
Teknologi Malaysia, UTM Johor Bahru, Johor, Malaysia.
Please see the link here: https://stm.bookpi.org/CPSTR-V9/article/view/14291
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