Results 101 to 110 of about 264 (113)

Time-resolved spectroscopy of LiF:Mg,Cu,P

Radiation Protection Dosimetry, 2006
Time-resolved spectroscopy measurements of LiF:Mg,Cu,P luminescence are presented to obtain a better understanding of the emission characteristics of this material. The intensities and decay of the emission bands were studied as a function of annealing temperature and ionising radiation (gamma) dose.
V K, Mathur, J H, Barkyoumb, Andrew, Jarrett   +2 more
openaire   +2 more sources

Behaviour of LiF:Mg,Cu,P and LiF:Mg,Ti thermoluminescent detectors for electron doses up to 1MGy

Radiation Measurements, 2010
Abstract The behaviour of LiF:Mg,Cu,P and LiF:Mg,Ti detectors at ultra-high doses up to 1 MGy, has been investigated. The presence of the ultra-high-temperature peak (450 °C) of reproducible properties was observed in various batches of LiF:Mg,Cu,P, confirming earlier findings. The results indicate that this peak is not an effect of random impurities
Pawel Bilski, Barbara Obryk, Zofia Stuglik   +2 more
openaire   +1 more source

Low Temperature Studies in LiF:Mg,Cu,P

Radiation Protection Dosimetry, 2002
Despite extensive investigations carried out in LiF:Mg,Cu,P, the nature of the emission centre is not clearly understood. Results of X ray excited emission in this material at room temperature and at 16 K are presented to obtain more data that can throw light on the emission characteristics of this material.
V K, Mathur, P K, Bandyopadhyay, J H, Barkyoumb, G G, Cai   +3 more
openaire   +2 more sources

Comparison of time effects, decision limit and residual signal in Harshaw LiF:Mg,Ti and LiF:Mg,Cu,P

Radiation Protection Dosimetry, 2006
The personal dosimetry service of the UK Health Protection Agency--formerly of the National Radiological Protection Board (NRPB)--is currently commissioning a body thermoluminescence dosemeter (TLD) system based on the use of Harshaw 8800 readers and two-element cards.
openaire   +2 more sources

Photo-luminescence of the Z3 center in LiF:Mg

Physics Letters, 1966
Abstract Photo-luminescence has been observed in X-irradiated magnesium-doped LiF. A measurement of the excitation spectrum for this emssion shows that it arises from the Z 3 center in this material.
J. Mort, D.W. Zimmerman
openaire   +1 more source

Thermoluminescence of nanocrystalline LiF:Mg, Cu, P

Journal of Luminescence, 2007
Abstract Nanocrystalline LiF:Mg, Cu, P of rod shape (about 30–40 nm in diameter and 0.3–0.5 μm in length) has been prepared by the chemical co-precipitation method. Thermoluminescence (TL) and dosimetric characteristics of the nanocrystalline phosphor are studied and presented here. The formation of the material was confirmed by the X-ray diffraction
Numan Salah, P.D. Sahare, A.A. Rupasov
openaire   +1 more source

Dose Linearity of LiF:Mg,Ti and LiF:Mg,Cu,P in Radiotherapy: Effect of Time Between Dose and Evaluation

Radiation Protection Dosimetry, 1999
Clinical measurements using LiF dosemeters in radiotherapy are complicated by deviations from a linear dose response at typical doses per fraction (exceeding I Gy). In the present study, two TLD materials - LiF:Mg,Ti and LiF:Mg,Cu,P - were utilised to investigate the effect of time between irradiation and evaluation on dose linearity.
L. Duggan, T. Kron
openaire   +1 more source

Thermoluminescence kinetic parameters of LiF:Mg,P

Optik, 2019
Abstract Thermoluminescence (TL) kinetic analysis using T m - T s t o p , E − T s t o p , peak shape and glow curve deconvolution methods have been carried out on the glow curves of LiF:Mg,P phosphor. Heating rate effects on the TL glow curve characteristics are also investigated.
K.B. Oguntona, F.O. Ogundare
openaire   +1 more source

On the roles of dopants in LiF:Mg,Cu,Si thermoluminescent material

Radiation Protection Dosimetry, 2013
The 3D thermoluminescent spectra and glow curves of LiF:Mg,Cu,Si with various Mg, Cu and Si concentrations were measured. The shapes of the glow curves in LiF:Mg,Cu,Si, LiF:Mg,Cu and LiF:Mg,Si are similar and the glow curves have peaks at approximately the same temperatures, but with significantly different intensities.
K, Tang, H, Cui, H, Zhu, Z, Liu, H, Fan
openaire   +2 more sources

The thermoluminescence glow curves of LiF:Mg,Ti: characteristics and mechanisms

Radiation Protection Dosimetry
Abstract The features of the glow curves of LiF:Mg,Ti are dependent on many parameters of irradiation, storage, ionisation density and readout. These are presented herein with emphasis on their complexity. Successful applications require some understanding of the great diversity of the glow curves.
Yigal Shalom Horowitz, Leonid Oster
openaire   +2 more sources