X-ray diffraction analysis of KY3F10 nanoparticles doped with Nd and preliminary studies for its use in high-dose radiation dosimetry

Rodrigo Uchida Ichikawa ,Horacio Marconi Da Silva Matias Dantas Linhares Linhares,Maria Inês Teixeira ,I.m Ranieri ,Andre Santos Barros Silva ,X Turrillas ,L.g Martinez

doi:10.15392/bjrs.v7i2a.586

Abstract

In this work, the structure and microstructure of Nd:KY3F10 nanoparticles was probed using X-ray synchrotron diffraction analysis. Rietveld refinement was applied to obtain cell parameters, atomic positions and atomic displacement factors to be compared with the ones found in literature. X-ray line profile methods were applied to determine mean crystallite size and crystallite size distribution. Thermoluminescent (TL) emission curves were measured for different radiation doses, from 0.10 kGy up to 10.0 kGy. Dose-response curves were obtained by area integration beneath the peaks from TL. The reproducibility of the results in this work has shown that this material can be considered a good dosimetric material.

Highlights

IntroductionWith the advent of nanoscience and nanotechnology the study of materials that exhibits properties to be applied in different areas is very interesting
With the advent of nanoscience and nanotechnology the study of materials that exhibits properties to be applied in different areas is very interesting. This is the case of KY3F10 nanoparticles, which has a cubic symmetry with nonequivalent sites for rare-earth ions [1]
Our results show that the material can be used for dosimetric applications with a coefficient of variation of approximately 7.71 %

Summary

Introduction

With the advent of nanoscience and nanotechnology the study of materials that exhibits properties to be applied in different areas is very interesting. There is an interest to produce luminescent materials to be used as radiation detectors and solid state dosimeters in various areas for industrial, scientific and medical applications [4] For this application, fluoride compounds are widely studied [4,5] for its interesting thermoluminescent properties. The incident radiation, when interacting with the crystalline lattice, is absorbed and its energy creates defects in the structure of the material, as for example, atomic displacements or electron trapping in vacancies Upon heating, these defects are extinguished and the energy previously acquired for their formation is released in the form of light, which is detected and quantified. The result is an intensity versus temperature curve, which means that the thermoluminescent signal is dependent on the temperature of the heat applied to the irradiated material and the position of the thermoluminescent emission peaks are directly related to the energy of the defects created

Methods

Results

Conclusion