نتایج جستجو برای: glow curve

تعداد نتایج: 131090  

ژورنال: سنجش و ایمنی پرتو 2014

The effect of the different parameters on the thermoluminescence behavior of LiF:Mg,Ti powder produced by melting method is reported. Standard powder of LiF:Mg,Ti manufactured by Harshaw company, was converted to smaller grains size, to obtain different meshes after melting and cooling steps. Powder in this study are of mesh size: 80 to 100, 120 to 140 and 170 to 200 µm. The results show that ...

2016
I. Bibicu S. Calogero L. Diamandescu

The paper reports on the optimization of a heater used in a Thermoluminescence glow curve apparatus. Two variants of the heater, planchet system and block system, are described. Both variants performed by a cheap material as graphite and designed following cryogenic principles, are very simple constructively, ensure minimum heat losses and require

2002
A. Necmeddin YAZICI

The possible defect structure of peak 1 of LiF:Mg,Ti (TLD-100) was studied in the present work after different pre-irradiation heat treatments between 80◦C and 150◦C using the computer glow curve deconvolution (CGCD) method. It was shown that the defect structure of peak 1 is based on colloid centers, Ti-3O2 -mixed centers and U1-centers.

ژورنال: سنجش و ایمنی پرتو 2019

In the current research, hydroxyapatite samples, synthesized by hydrothermal methods was studied from the perspective of thermoluminescence dosimetry. The results of the study were compared and studied with different aspects of dosimetry, including dose-response variations of synthesized samples, degree of its linearity, and the percentage of response fading, as well as the position of the main...

2014
George Kitis Vasilis Pagonis

Localized electronic recombination processes in donor–acceptor pairs of luminescent materials have been recently modeled using a new kinetic model based on tunneling. Within this model, recombination is assumed to take place via the excited state of the donor, and nearest-neighbor recombinations take place within a random distribution of centers. An approximate semi-analytical version of the mo...

2013
M. Benabdesselam F. Mady S. Girard

This study analyses the thermally stimulated luminescence (TSL) or thermoluminescence glow curve between 300 and 773 K of germanium-doped silica optical fibre and finds a main glow peak at around 500 K with a characteristic spectral emission centred at 400 nm. Both features are particularly suitable for dosimetry. Thus, an investigation by the TSL technique of some first clinically relevant fea...

Journal: :Radiation protection dosimetry 2011
E Fuks Y S Horowitz A Horowitz L Oster S Marino M Rainer A Rosenfeld H Datz

The shape of composite peak 5 in the glow curve of LiF:Mg,Ti (TLD-100) following (90)Sr/(90)Y beta irradiation, previously demonstrated to be dependent on the cooling rate used in the 400°C pre-irradiation anneal, is shown to be dependent on ionisation density in both naturally cooled and slow-cooled samples. Following heavy-charged particle high-ionisation density (HID) irradiation, the temper...

Journal: :Sustainability 2022

Thermoluminescence characteristics of natural rhyolite have been studied. Dose response at a wide dose range 0.5–2000 Gy has determined. Minimum detectable and thermal fading rate are evaluated. Glow curve deconvolution is conducted after determining the best read-out conditions. The repeated initial rise (RIR) method used to detect overlapping peaks, glow procedure extract thermoluminescence p...

2004
R. H. Bartram A. Lempicki L. A. Kappers D. S. Hamilton

A sample of Eu-activated lutetium sesquioxide transparent ceramic has been investigated by combined scintillation and thermoluminescence excited by prolonged gamma-ray irradiation. The thermoluminescence glow curve partially confirms and extends a previous model for afterglow following pulsed X-ray excitation. The initial concentration of hole traps, tentatively attributed to anion Frenkel defe...

Journal: :Journal of Luminescence 2022

Carbon and magnesium co-doped aluminum oxide (Al2O3:C,Mg) is a highly sensitive luminescence dosimeter with promising use in wide spectrum of radiation-related applications, including neutron dosimetry as fluorescent nuclear track detector (FNTD). The goal this work to critically evaluate diverse methods approaches for the determination kinetic parameters using Al2O3:C, Mg case study. was beta ...

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