Results 81 to 90 of about 264 (113)
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A study on thermal degradation of LiF:Mg,Cu,P and LiF:Mg,Cu,Si
Radiation Measurements, 2010Abstract We investigated the thermal degradation of LiF:Mg,Cu,P (NTL-250) and LiF:Mg,Cu,Si (MCS) for the development of TL sheet. By thermogravimetry and differential scanning calorimetry (TG-DSC), the exothermic reaction was observed between 320 °C and 400 °C in MCS as well as NTL-250.
Akiko Konnai, Naoto Ozasa, Jung-il Lee
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Evaluation of the performance of two LiF:Mg,Ti and LiF:Mg,Cu,P dosemeters for extremity monitoring
Radiation Protection Dosimetry, 2010In this paper, the results aimed at assessing the performance of two varieties of LiF detectors (LiF:Mg,Ti and LiF:Mg,Cu,P) in photon fields relatively to reproducibility, detection threshold and angular dependence as defined in the ISO 12794 standard are presented.
L C, Freire +5 more
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Radiation Protection Dosimetry, 2015
The influence of various annealing treatments on radioluminescent (RL) and thermoluminescent (TL) spectra of LiF:Mg,Cu,Si and LiF:Mg,Cu,P was investigated. The TL and RL emission bands for LiF:Mg,Cu,P are not the same; however, the emission band peaking at ∼383 nm is predominant in the TL and RL emission for LiF:Mg,Cu,Si. With the increase in annealing
K, Tang, H, Fan, H, Cui, H, Zhu, Z, Liu
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The influence of various annealing treatments on radioluminescent (RL) and thermoluminescent (TL) spectra of LiF:Mg,Cu,Si and LiF:Mg,Cu,P was investigated. The TL and RL emission bands for LiF:Mg,Cu,P are not the same; however, the emission band peaking at ∼383 nm is predominant in the TL and RL emission for LiF:Mg,Cu,Si. With the increase in annealing
K, Tang, H, Fan, H, Cui, H, Zhu, Z, Liu
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Medical Physics, 1997
This study compared the relative effectiveness of TLD crystals LiF:Mg,Ti (TLD‐100) and LiF:Mg,Cu,P (TLD‐700H) for clinical dosimetry, focusing on reproducibility, linearity, and energy response. Experimental results indicated that TLD‐700H was superior to TLD‐100 with regard to reproducibility, lack of supralinearity, and the absence of variation in TL
C K, Harris +3 more
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This study compared the relative effectiveness of TLD crystals LiF:Mg,Ti (TLD‐100) and LiF:Mg,Cu,P (TLD‐700H) for clinical dosimetry, focusing on reproducibility, linearity, and energy response. Experimental results indicated that TLD‐700H was superior to TLD‐100 with regard to reproducibility, lack of supralinearity, and the absence of variation in TL
C K, Harris +3 more
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Lithium Fluoride: From LiF:Mg,Ti to LiF:Mg,Cu,P
Radiation Protection Dosimetry, 2002Differences and similarities between LiF-based LiF:Mg,Ti and LiF:Mg,Cu,P are discussed, with respect to their dosimetric properties--sensitivity, non-linearity of dose response and heavy charged particle efficiency, as related to the concentration and the individual role of the Mg, Ti, Cu and P dopants.
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Radiation Protection Dosimetry, 2004
In this paper, the various models dealing with the effects of ionisation density on the thermoluminescence (TL) response (efficiency) of TL LiF dosemeters are discussed. These include (i) the Unified Interaction Model (UNIM), which models photon/electron linear/supralinear dose response; (ii) the Extended Track Interaction Model (ETIM), which models ...
Yigal, Horowitz, Pawel, Olko
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In this paper, the various models dealing with the effects of ionisation density on the thermoluminescence (TL) response (efficiency) of TL LiF dosemeters are discussed. These include (i) the Unified Interaction Model (UNIM), which models photon/electron linear/supralinear dose response; (ii) the Extended Track Interaction Model (ETIM), which models ...
Yigal, Horowitz, Pawel, Olko
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FADING EFFECT OF LiF:Mg,Ti AND LiF:Mg,Cu,P Ext-Rad AND WHOLE-BODY DETECTORS
Radiation Protection Dosimetry, 2015Thermoluminescence dosemeters are widely used in individual and environmental monitoring. The aim of this work was to compare the thermal stability of dosemeters of the Ext-Rad and whole-body card types with LiF:Mg,Ti and LiF:Mg,Cu,P detectors stored at different temperatures and periods. The dosemeters were stored at 0°C, room temperature and 40°C for
J, Pereira +6 more
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UV-induced bleaching of deep traps in Harshaw TLD LiF:Mg,Cu,P and LiF:Mg,Ti
Radiation Protection Dosimetry, 2011The effects of UV-induced bleaching of deep traps on Harshaw thermoluminescent (TL) LiF:Mg,Cu,P and LiF:Mg,Ti materials were investigated. During a normal heating cycle, LiF:Mg,Cu,P is limited to a maximum temperature of 240 °C. LiF:Mg,Ti can be read to higher temperatures; however, encapsulation in polytetrafluoroethylene limits the maximum readout ...
L, Benevides +6 more
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The light sensitivity of thermoluminescent materials: LiF:Mg,Cu,P, LiF:Mg,Ti and Al2O3:C
Radiation Measurements, 2000Abstract Many thermoluminescence dosimetry (TLD) materials exhibit a variation in read-out with light exposure (including both visible and UV radiation energy) which may cause problems in environmental dosimetry. The aim of the present study was to investigate this for three newer preparations of TLD material — LiF:Mg,Ti (GR-100, DML, China), LiF:Mg ...
L. Duggan +5 more
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LiF:Mg,Ti Versus LiF:Mg,Cu,P: The Competition Heats Up
Radiation Protection Dosimetry, 1993Abstract Current knowledge concerning the dosimetric characteristics of LiF:Mg,Cu,P and LiF:Mg,Ti is reviewed, including glow curve structure, response to annealing procedures, trap conversion processes, dose response, tissue-equivalence, residual signal and others.
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