Results 91 to 100 of about 252 (114)

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

Optical and thermoluminescence properties of LiF:Cu, LiF:Mg,Cu and LiF:Mg,Cu,P single crystals

Radiation Measurements, 1998
Abstract Thermoluminescence properties and optical absorption in the UV-VIS region (1.5–6.5 eV) during linear heating from RT up to 400°C of in-house grown LiF:Mg, LiF:Mg,Cu and LiF:Mg,Cu,P single crystals were investigated. TL glow curve and emission spectrum (not sensitivity) of the LiF:Mg,Cu,P single crystals are the same as for the highly ...
V. Chernov, S. Mironenko, B. Rogalev, A.J.J. Bos, J.Th.M de Haas, A. Delgado   +5 more
openaire   +1 more source

The light sensitivity of thermoluminescent materials: LiF:Mg,Cu,P, LiF:Mg,Ti and Al2O3:C

Radiation Measurements, 2000
Abstract 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, M. Budzanowski, K. Przegietka, N. Reitsema, J. Wong, T. Kron   +5 more
openaire   +1 more source

Evaluation of the performance of two LiF:Mg,Ti and LiF:Mg,Cu,P dosemeters for extremity monitoring

Radiation Protection Dosimetry, 2010
In 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, M F, Pereira, A M, Calado, L M, Santos, J V, Cardoso, J G, Alves   +5 more
openaire   +2 more sources

Comparison of the effects of exposure to light in Harshaw LiF:Mg,Ti and LiF:Mg,Cu,P

Radiation Protection Dosimetry, 2006
The response of thermoluminescence dosemeters (TLDs) to light, in various conditions, has been studied. TLD cards containing both conventional lithium fluoride (LiF:Mg,Ti) and the high-sensitivity material LiF:Mg,Cu,P were available, so permitting a comparison between the two types. Also available for the tests were Harshaw extremity EXT-RAD (LiF:Mg,Cu,
S T, Baker, P J, Gilvin
openaire   +2 more sources

Thermoluminescent characteristics of LiF:Mg,Ti from three manufacturers

Medical Physics, 1993
LiF:Mg,Ti thermoluminescent dosimeters (TLD's) were obtained from three manufacturers with the specification that they all lie within ±5% of the mean. All were chips of size 3 mm×3 mm×1 mm. The three sample groups were compared on the basis of their energy response, linearity of the thermoluminescent (TL) response with increasing exposure, sensitivity,
E J, Fairbanks, L A, DeWerd
openaire   +2 more sources

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

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

Glow Curve Analysis of Long-term Stability of LiF:Mg,Cu,P as Compared to LiF:Mg,Ti

Radiation Protection Dosimetry, 1999
Over a six month period, the long-term stability of LiF:Mg,Cu,P (GR-200A, Beijing China) was compared with LiF:Mg,Ti (GR-100, Beijing China). This is of particular interest in applications where there can be considerable variations in the time intervals between TLD preparation, irradiation and readout, such as environmental, accident personal and ...
L. Duggan, T. Kron
openaire   +1 more source

Pre- and post-irradiation fading effect for LiF:Mg,Ti and LiF:Mg,Cu,P materials used in routine monitoring

Radiation Protection Dosimetry, 2011
LiF is a well-known thermoluminescent (TL) material used in individual monitoring, and its fading characteristics have been studied for years. In the present study, the fading characteristics (for a period of 150 d) of various commercial LiF materials with different dopants have been evaluated.
E, Carinou, P, Askounis, F, Dimitropoulou, G, Kiranos, H, Kyrgiakou, E, Nirgianaki, E, Papadomarkaki, V, Kamenopoulou   +7 more
openaire   +2 more sources