Journal of Atomic, Molecular, Condensed Matter & Nano Physics Vol. 9, No. 1, pp. 85–92, 2022 ISSN 2582-8215 Published by RGN Publications http://www.rgnpublications.com Special Issue: Nuclear Track Detectors, Luminescence and Their Applications Guest Editors: P.D. Sahare, Rajesh Kumar, Ashok Kumar DOI: 10.26713/jamcnp.v9i1.1963 Research Article Luminescence Characteristics of LiCaAlF 6 :Eu TLD Phosphor Abhishek 1 , Aditya Sahare 2 , Siddharth Sahare 3 , Manveer Singh 4 andP.D. Sahare* 5 1 Institute of Technology and Management, Technische Universität Berlin, 10623 Berlin, Germany 2 Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan, Republic of China 3 Department of Physics, Hansraj College (University of Delhi), Delhi 110007, India 4 Department of Physics, Ramjas College (University of Delhi), Delhi 110007, India 5 Department of Physics & Astrophysics, University of Delhi, Delhi 110007, India *Corresponding author: pdsahare@physics.du.ac.in Received: February 1, 2022 Accepted: June 11, 2022 Communicated by: Tarun Kumar Abstract. The material LiCaAlF 6 :Eu (0.1 mol%) in microcrystalline form was prepared through water solution coprecipitation method followed by melting it at around 900 ◦ C in a graphite crucible. The ingot was crushed and sieved through standard sieves to obtain powder approximate in the range 100-125 μm. The material was annealed at around 200-800 ◦ C. The material was characterized by XRD. The materials were irradiated to different doses of γ-rays using 60 Co radioactive source and thermoluminescence (TL) glow curves were recorded. The powder material was found to be at least 10 times more sensitive than CaSO 4 :Dy commercially available TLD pellets. However, as the dosimetry peak is at around 180 ◦ C, there is fading around 20%. Considering these facts, the material could be considered as a highly sensitive and suitable TLD phosphor. Keywords. LiCaAlF 6 :Eu, Thermoluminescence (TL), High sensitivity, Dosimetry, TLD PACS. 78.60.Kn, 8753.Bn, 7855.Hx Copyright © 2022 Abhishek, Aditya Sahare, Siddharth Sahare, Manveer Singh and P.D. Sahare. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.