Thermoluminescent (TL) properties of the perovskite KMgF3 activated by Ce and Er impurities

Furetta, C.; Santopietro, F.; Sanipoli, C.; Kitis, G.

doi:10.1016/s0969-8043(01)00085-9

Cited by 52 publications

(22 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The total fluoride content by titration indicated a perfectly stoichiometric compound. This synthetic approach for making bulk fluorides of Mg, Mn and Co may facilitate the study of their luminescent properties by doping of suitable activators (Furetta et al 2001).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of nanocrystalline mixed metal fluorides in nonaqueous medium

et al. 2009

View full text Add to dashboard Cite

Synthesis of mixed metal fluorides of the general formula, KMF 3 (M = Mg, Mn, Co, Ni, Cu and Zn), possessing perovskite structure was investigated in non-aqueous medium. The fluorides were characterized by powder X-ray diffraction, FT-IR spectroscopy, thermal analysis, SEM and TEM. Monophasic cubic phases were obtained for the central metal ions such as Mg, Mn, Co, Ni, and Zn and a tetragonally distorted phase was observed for Cu. The usage of non-aqueous medium is advantageous for the bulk synthesis of these fluorides, since it eliminated the generation and handling of the hazardous HF that has usually been encountered during aqueous preparations. The average crystallite size of the fluorides obtained by this approach was estimated to be in the range of 9-30 nm. SEM micrographs of KZnF 3 showed cubic morphology of perovskite phases. TEM studies on KCuF 3 confirmed the presence of tetragonal distortion. The fluoride content was determined by titrimetry and found to be nearly stoichiometric. Some of these fluorides were found to be thermally stable up to 225°C in air. These fluorides were employed as fluorinating agents in organic fluorination reactions, thereby suggesting their possible utilization for selective fluorination of aliphatic and aromatic hydrofluorocarbons (HFCs) that are industrially relevant.

show abstract

Section: Resultsmentioning

confidence: 99%

Synthesis of nanocrystalline mixed metal fluorides in nonaqueous medium

et al. 2009

View full text Add to dashboard Cite

show abstract

“…The annealing was performed to erase any previous irradiation effect and to achieve reproducible results. ( 10 ) In this work, the TLDs were annealed using the following procedure: 400°C for 1 hour and then cooled between aluminum blocks for 2 hours, then annealed for 20 hours at 80°C and cooled between aluminum blocks.…”

Section: Methodsmentioning

confidence: 99%

The impact of uncertainties associated with MammoSite brachytherapy on the dose distribution in the breast

Bensaleh

Bezak

2011

J Applied Clin Med Phys

View full text Add to dashboard Cite

The MammoSite radiation therapy system is a novel technique for treatment of patients with early‐stage breast cancer. It was developed to overcome the longer schedules associated with external‐beam radiation therapy. It consists of a small balloon (4 cm in diameter) connected to an inflation channel and a catheter for the passage of a high dose rate 192Ir brachytherapy source. The device is placed into the tumor resection cavity and inflated with a mixture of saline and radiographic contrast agent to a size that fills the cavity. A high dose rate 192Ir source is driven into the balloon center using a remote afterloader to deliver the prescribed dose at a point 1 cm away from the balloon surface. There are several uncertainties that affect the dose distribution in the MammoSite brachytherapy. They include source position deviation, balloon deformation, and the concentration of the contrast medium inside the balloon. The purpose of this study is to investigate the extent of the dose perturbation for various concentrations of the contrast medium in a MammoSite balloon using Monte Carlo simulations and thermoluminescent dosimetry. This study also combines the impact of these uncertainties on the MammoSite treatment efficacy. The current study demonstrates that the combined uncertainties associated with the MammoSite brachytherapy technique — up to the value of 2 mm balloon deformation, 1 mm source deviation, and 15% contrast concentration — have no impact on the tumor control probability.PACS number: 87.53.‐j

show abstract

“…This shows photo-luminescence properties when it is doped with lanthanide ions [6]. It is desirable for scintillators and radiation dosimeters when it is doped approximately [7]. Neupane et al [8] have reported an energy band gap of 6.8 eV for RbCaF 3 from the FP-LAPW method based calculation, which also suggests an insulating behavior of this material.…”

Section: Introductionmentioning

confidence: 96%

Study of Structural and Electronic Properties of Fluoride Perovskite KCaF3 using FP-LAPW Method

Neupane¹,

Thapa

2017

Himalayan Physics

View full text Add to dashboard Cite

Abstract:To study the structural and electronic properties of cubical perovskite KCaF 3 , the first principles calculation within the full potential linearized augmented plane wave (FP-LAPW) method is applied. The exchange correlation effects are included through the GGA exchange potential. The calculated structural properties such as equilibrium lattice constant, the bulk modulus and its pressure derivative are in agreement with the published results of other authors. From our study we have found that the band gap of KCaF 3 is 6.4 eV which is the indication of insulating behavior.

show abstract

Thermoluminescent (TL) properties of the perovskite KMgF3 activated by Ce and Er impurities

Cited by 52 publications

References 11 publications

Synthesis of nanocrystalline mixed metal fluorides in nonaqueous medium

Synthesis of nanocrystalline mixed metal fluorides in nonaqueous medium

The impact of uncertainties associated with MammoSite brachytherapy on the dose distribution in the breast

Study of Structural and Electronic Properties of Fluoride Perovskite KCaF3 using FP-LAPW Method

Contact Info

Product

Resources

About