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Dosimetric characterization of a rotating anode x-ray tube for FLASH radiotherapy research. [PDF]
Med PhysMiles D, Sforza D, Wong J, Rezaee M.
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Role of dopants in LiF:Mg,Cu, LiF:Mg,P and LiF:Mg,Cu,P detectors
Journal of Solid State Chemistry, 2013Abstract In this study, electronic structure of LiF crystal doped with Mg,Cu,P impurities was studied with WIEN2k code on the basis of FPLAPW+lo method. Results show that in Mg-doped LiF composition, an electronic trap was created with impurity concentration of 1.56% and 3.125%. In this condition, the electronic trap with increasing the percentage of
Kh. Mohammadi +3 more
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Radiation Protection Dosimetry, 1996
Three LiF based thermoluminescent (TL) phosphors, namely, LiF:Mg,Ti, LiF:Mg,Cu and LiF:Mg,Cu,P were investigated for their TL glow curves, TL sensitisation, TL supralinearity, phototransferred TL (PTTL), residual TL (RTL) and emission spectra. Contrary to recently reported results, LiF:Mg,Cu,P did not show any sensitisation in the dose range 0.5-100 ...
J.K. Srivastava +4 more
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Three LiF based thermoluminescent (TL) phosphors, namely, LiF:Mg,Ti, LiF:Mg,Cu and LiF:Mg,Cu,P were investigated for their TL glow curves, TL sensitisation, TL supralinearity, phototransferred TL (PTTL), residual TL (RTL) and emission spectra. Contrary to recently reported results, LiF:Mg,Cu,P did not show any sensitisation in the dose range 0.5-100 ...
J.K. Srivastava +4 more
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Evaluating Two Extremity Dosemeters Based on LiF:Mg,Ti or LiF:Mg,Cu,P
Radiation Protection Dosimetry, 2002Evaluation of a new extremity dosemeter is presented. The dosemeter is a passive device that is easy to wear and features a permanent individual numerical ID with barcode, a watertight case, an automatic TLD reader and database management software. Two dosemeters were studied: the first consists of a 100 mg x cm(-2) 7LiF:Mg,Ti (TLD-700) chip and a 42 ...
L Z, Luo, K J, Velbeck, J E, Rotunda
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2005
Abstract Four thermoluminescence (TL) peaks at 60–90, 100–130, 130–180 and 180–220 °C (the main peak) were observed from LiF:Mg,Cu, LiF:Mg,Cu,Na and LiF:Mg,Cu,Si. The recorded emission bands were at 375 and 414 nm in LiF:Mg,Cu, at 379 and 424 nm in LiF:Mg,Cu,Na and 378 and 425 nm in LiF:Mg,Cu,Si. The loss of TL intensity and temperature shift of the
B. Yang, Q. Lu, S. Wang, P.D. Townsend
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Abstract Four thermoluminescence (TL) peaks at 60–90, 100–130, 130–180 and 180–220 °C (the main peak) were observed from LiF:Mg,Cu, LiF:Mg,Cu,Na and LiF:Mg,Cu,Si. The recorded emission bands were at 375 and 414 nm in LiF:Mg,Cu, at 379 and 424 nm in LiF:Mg,Cu,Na and 378 and 425 nm in LiF:Mg,Cu,Si. The loss of TL intensity and temperature shift of the
B. Yang, Q. Lu, S. Wang, P.D. Townsend
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2008
Abstract Two strong thermal peaks in the wavelength range 220–420 nm have been detected at 128 and 140 K in LiF:Mg,Cu, at 123 and 135 K in LiF:Mg,Cu,P and at 125 and 133 K in LiF:Mg,Cu,Si, respectively. The origin of these main TL peaks is discussed in terms of defect perturbed H–F and V K –e type recombination, respectively. The relative intensity
B. Yang, L. Wang, P.D. Townsend, H. Gao
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Abstract Two strong thermal peaks in the wavelength range 220–420 nm have been detected at 128 and 140 K in LiF:Mg,Cu, at 123 and 135 K in LiF:Mg,Cu,P and at 125 and 133 K in LiF:Mg,Cu,Si, respectively. The origin of these main TL peaks is discussed in terms of defect perturbed H–F and V K –e type recombination, respectively. The relative intensity
B. Yang, L. Wang, P.D. Townsend, H. Gao
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Thermoluminescent materials for medical applications: LiF:Mg,Ti and LiF:Mg,Cu,P
Radiation Measurements, 2006Thermoluminescent dosimeters are used in a variety of medical applications including radiation therapy, diagnostic radiology, and radiotherapy mailed dosimetry. For many years LiF:Mg,Ti has been dominating the field of TL medical dosimetry. In recent years, however, a relatively new material, LiF:Mg,Cu,P, has attracted the attention of the medical ...
M. Moscovitch, Y.S. Horowitz
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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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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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Low temperature radioluminescence of LiF:Mg,Cu,P
Radiation Protection Dosimetry, 2006Low temperature radioluminescence spectra of LiF, variously co-doped with Mg, Cu and P, show highly unusual temperature dependencies which resemble thermoluminescence data. The signals include intense peaks and a relatively weak continuous background. One peak occurs below 30 K, together with a major peak near 125 K. The signals are highly sensitive to
K, Kurt +4 more
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