scholarly journals Use of Terbium Doped Phosphate Glasses for High Dose Radiation Dosimetry—Thermoluminescence Characteristics, Dose Response and Optimization of Readout Method

2021 ◽  
Vol 11 (16) ◽  
pp. 7221
Author(s):  
Andrzej Gasiorowski ◽  
Piotr Szajerski ◽  
Jose Francisco Benavente Cuevas
Keyword(s):  
Radiation Dosimetry ◽  
Dose Range ◽  
Phosphate Glasses ◽  
High Dose ◽  
Signal Loss ◽  
Deconvolution Analysis ◽  
Thermoluminescence Dosimetry ◽  
Glass Matrices ◽  
Dose Responses ◽  
Dose Radiation

The phosphate glass samples doped with Tb2O3 oxide (general formula: P2O5-Al2O3-Na2O-Tb2O3) were synthesized and studied for usage in high-dose radiation dosimetry (for example, in high-activity nuclear waste disposals). The influence of terbium concentration on thermoluminescent (TL) signals was analyzed. TL properties of glasses were investigated using various experimental techniques such as direct measurements of TL response vs. radiation dose, Tmax–Tstop and VHR (various heating rate) methods, and glow curve deconvolution analysis. The thermoluminescence dosimetry (TLD) technique was used as the main investigation tool to study detectors’ dose responses. It has been proved that increasing the concentration of terbium oxide in glass matrices significantly increases the thermoluminescence yield of examined material. For the highest dose range (up to 35 kGy), the dependence of the integrated thermoluminescent signals vs. dose can be considered as a saturation-type curve. Additional preheating of samples improves linearity of signal vs. dose dependencies and leads to a decrease of the signal loss over time. All obtained data suggest that investigated material can be used in high-dose radiation dosimetry. Additional advantages of the investigated dosimetric system are its potential ability to re-use the same dosimeters multiple times and the fact that reading dosimeters only requires usage of a basic TL reader without any modifications.

The response of potassium nitrate for high-dose radiation dosimetry

2002 ◽  
Vol 63 (3-6) ◽  
pp. 719-722 ◽  
Author(s):  
Ana M.Sisti Galante ◽  
Barbara M. Rzyski ◽  
Letı́cia L. Campos ◽  
Anna L. Villavicencio
Keyword(s):  
Radiation Dosimetry ◽  
Potassium Nitrate ◽  
High Dose ◽  
Dose Radiation

scholarly journals Application of Aerosol Formation to Radiation Dosimetry in High-Dose Radiation Fields

2012 ◽  
Vol 3 ◽  
pp. 90-93
Author(s):  
Naoyuki OSADA ◽  
Yuichi OKI ◽  
Keizou YAMASAKI ◽  
Seiichi SHIBATA
Keyword(s):  
Radiation Dosimetry ◽  
High Dose ◽  
Aerosol Formation ◽  
Radiation Fields ◽  
Dose Radiation

Synthesis and Thermoluminescence of New ZnO Phosphors

2010 ◽  
Vol 1278 ◽  
Author(s):  
C. Cruz-Vázquez ◽  
H. A. Borbón-Nuñez ◽  
V. R. Orante-Barrón ◽  
S. E. Burruel-Ibarra ◽  
V. M. Castaño ◽  
...  
Keyword(s):  
Detection Limit ◽  
Glow Curve ◽  
Radiation Dosimetry ◽  
Chemical Method ◽  
Beta Particle ◽  
High Dose ◽  
Lower Detection Limit ◽  
Particle Irradiation ◽  
Lower Detection ◽  
Dose Radiation

AbstractIn this work, the synthesis and thermoluminescence properties of new ZnO phosphors obtained by a chemical method are reported. Some samples were exposed to beta particle irradiation for doses ranging from 10.0 up to 6,400 Gy, and it was found that the thermoluminescence response as a function of dose is linear for doses below 200 Gy, and sublinear with no saturation clouds for greater doses. A broad shape glow curve with maximum located above 230 °C, that shifts to lower temperatures as dose increases, indicating that second order kinetics thermoluminescence processes are involved. The lower detection limit was estimated to be 13 Gy. We conclude that the phosphors under study are promising to develop dosimeters for high dose radiation dosimetry.

Non-small-cell lung cancer: should unresectable stage III patients routinely receive high-dose radiation therapy?

1988 ◽  
Vol 6 (3) ◽  
pp. 552-558 ◽  
Author(s):  
D G Payne
Keyword(s):  
Lung Cancer ◽  
Radiation Therapy ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Dose Range ◽  
Small Cell ◽  
High Dose ◽  
Small Cell Lung ◽  
Mediastinal Disease ◽  
Dose Radiation

Non-small-cell lung cancer patients who have unresectable mediastinal disease have a poor prognosis regardless of therapy administered. The various rationales for high-dose radiation therapy with curative intent are reviewed in the context of treatment results reported in the literature. The case for a dose-cure relationship in a clinically practical dose range must be considered unproven. On the other hand, the evidence for dose-response effects suggests that higher dosages could result in improved quality of life. There is a need to further refine reproducible criteria, both anatomic (such as mediastinal involvement) and non-anatomic (such as performance status), to permit more appropriate selection of patients for high-dose treatment. Studies involving less rather than more treatment with appropriate endpoints might be both ethical and appropriate.

Dyed acrylic-acid grafted polypropylene films for high-dose radiation dosimetry

1999 ◽  
Vol 54 (3) ◽  
pp. 271-277 ◽  
Author(s):  
A.A. Abdel-Fattah ◽  
F.I.A. Said ◽  
S. Ebraheem ◽  
M. El-Kelany ◽  
A.A. El Miligy
Keyword(s):  
Acrylic Acid ◽  
Radiation Dosimetry ◽  
High Dose ◽  
Polypropylene Films ◽  
Dose Radiation

Investigation on various types of silica fibre as thermoluminescent sensors for ultra-high dose radiation dosimetry

2018 ◽  
Vol 273 ◽  
pp. 197-205 ◽  
Author(s):  
F. Moradi ◽  
G.A. Mahdiraji ◽  
M.U. Khandaker ◽  
N.M. Ung ◽  
F.R. Mahamd Adikan ◽  
...  
Keyword(s):  
Radiation Dosimetry ◽  
High Dose ◽  
Dose Radiation ◽  
Silica Fibre
Sign in / Sign up

Export Citation Format

Share Document