Fading is important in choosing appropriate thermoluminescence (TL) materials for particular applications. Comparison is made herein of changes due to fading in the TL yield of Ge-doped fibres and lithium fluoride (LiF) dosimeters, for varying temperature and dose. The fading is independent of dose for all investigated dosimeters while the loss in TL yield reduces for lower storage temperatures. At room temperature and for 133 days of storage, a maximum signal loss of 5% has been observed for both forms of LiF dosimeter, while 9 and 50 μm core diameter Ge-doped fibres produced a loss of 11% and 8%, respectively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.apradiso.2011.11.026 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Characterization of LiF TLD-100 in carbon ion beams for remote audits.
Med Phys
December 2024
Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
Background: A passive dosimeter framework for the measurement of dose in carbon ion beams has yet to be characterized or implemented for regular use.
Purpose: This work determined the dose calculation correction factors for absorbed dose in thermoluminescent dosimeters (TLDs) in a therapeutic carbon ion beam. TLD could be a useful tool for remote audits, particularly in the context of clinical trials as new protocols are developed for carbon ion radiotherapy.
Thermoluminescence of NaF and NaF:Tm phosphors exposed to beta particle irradiation.
Appl Radiat Isot
March 2025
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Apartado Postal 130, Hermosillo, Sonora, 83000, Mexico.
This work reports the synthesis and beta particle excited thermoluminescence (TL) characteristics of NaF and NaF:Tm phosphors synthesized via wet precipitation. The samples were subjected to thermal annealing at 750 °C for 5, 10, and 24 h in an air atmosphere. A sensitization effect is observed in repeated irradiation-TL readout cycles.
View Article and Find Full Text PDFMonte Carlo-based Investigation of Absorbed-dose Energy Dependence of Thermoluminescent Dosimeters in Therapeutic Proton and Carbon Ion Beams.
J Med Phys
June 2024
Radiological Physics and Advisory Division, Health, Safety and Environment Group, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India.
Background: The present study is aimed at calculating relative absorbed-dose energy response correction () of commonly used thermoluminescent dosimeters (TLDs) such as LiF, LiBO, and AlO as a function of depth in water for protons (50-250 MeV/n) and carbon ion (80-480 MeV/n) beams using Monte Carlo-based FLUKA code.
Materials And Methods: On-axis depth-dose profiles in water are calculated for protons (50-250 MeV/n) and carbon ion (80-480 MeV/n) beams using FLUKA code. For the calculation of , selective depths are chosen based on the depth-dose profiles.
Thermoluminescence and ATR-FTIR study of UVC-irradiated low-density polyethylene (LDPE) food packaging.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
Department of Analytical Sciences, Faculty of Sciences, National University of Distance Education (UNED), Av. de Esparta s/n, 28232 Madrid, Spain.
This research aims to study the effects of ultraviolet C (UVC) radiation on low-density polyethylene (LDPE) food packaging. Main objectives include evaluating LDPE degradation and detecting UVC radiation using thermoluminescent dosimeters (TLDs) placed under LDPE samples. Results confirm accurate UVC detection after one hour of exposure, providing a useful tool for optimize food treatment procedures.
View Article and Find Full Text PDFMR compatible detectors assessment for a 0.35 T MR-linac commissioning.
Radiat Oncol
March 2024
Medical Physics Department, Pitié-Salpêtrière Hospital, AP-HP Sorbonne University, 47-83 Boulevard de l'Hôpital, 75651, Paris Cedex 13, France.
Purpose: To assess a large panel of MR compatible detectors on the full range of measurements required for a 0.35 T MR-linac commissioning by using a specific statistical method represented as a continuum of comparison with the Monte Carlo (MC) TPS calculations. This study also describes the commissioning tests and the secondary MC dose calculation validation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!