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OSL Characteristics of Cu Activated NaLi2po4 Phosphor


Affiliations
1 Department of Physics & Astrophysics, University of Delhi, Delhi 110 007, India
 

Cu-activated NaLi2po4 phosphor material was successfully synthesized through solid state diffusion method. It was mainly doped with Cu2Cl2 and CuCl2 salts for impurities in the form of Cu+ and Cu2+ respectively. Powder X-ray Diffraction (PXRD) was carried out for the confirmation of single phase of synthesized phosphor material. Dosimetric properties of the material were investigated using the Optically Stimulated (OSL) techniques. We have found maximum sensitivity of Cu2+: NaLi2po4 samples at concentration 1000ppm (0.1 mol%) in OSL with annealing temperatures 1073K. Whereas for Cu+: NaLi2po4 samples, 873K was considered as the optimization annealing temperature with impurity concentrations 0.08mol%. The phosphor material exhibits good dosimetric characteristics. It was found that NaLi2po4:Cu2+ is little less (3 times) and NaLi2po4: Cu+ is 4.2 times less sensitive than that of STD. Al2O3:C (Landauer Inc., USA) respectively. For further OSL studies only NaLi2po4:Cu2+ used. Low TL fading, forNaLi2po4:Cu+, only 10.74% fading takes place in 10days after that it negligibly fade. Also, wide OSL dose response (10-15kGy), easy optically bleaching for reusability and easy to handle are some of the other significant qualities observed in our samples. Simple method of preparation and tissue equivalence (Zeff~10.8) adds on the advantages of NaLi2po4: Cu phosphor. This type of phosphor is also suitable for high energy radiation dosimetry used in OSL techniques.

Keywords

Optically Stimulated Luminescence (OSL), Dosimetry, Phosphor, Solid State Diffusion, NaLi2po4: Cu, Sensitivity, Reusability, Optically Bleaching.
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  • L Bøtter-Jensen, SWS McKeever, AG Wintle, Optically Stimulated Luminescence Dosimetry Elsevier, Amsterdam, 2003.

  • EG Yukihara, SWS McKeever, Optically Stimulated Luminescence: Fundamentals and Applications, John Wiley & Sons, Chichester, West Sussex, UK, 2011.

  • SWS McKeever, M Moscovitch, PD Townsend, Thermoluminescence Dosimetry Materials:Properties and Uses, Nuclear Technology Publishing, Ashford, 1995.

  • R Chen, SWS McKeever, Theory of Thermoluminescence and Related Phenomena, World Scientific Publishing Co, Singapore, 1997.

  • E G Yukihara and S W S McKeever Optically stimulated luminescence (OSL) dosimetry in medicine Phys Med Biol 53 (2008) R351.

  • Sahare PD, Neyaz Ali, NS Rawat, Shaila Bahl, and Pratik Kumar, J Lumin,174 (2016) 22.

  • JieXu, Zhaoyang Chen, Minqiang Yanwei Fan,ChengfaHe, Journal of Rare Earths, (2019).

  • Mandlik, Nandkumar, PD Sahare,MSKulkarni, BCBhatt, VNBhoraskar, and SDDhole, J Lumin, 146 (2014) 128.

  • Dotzler C, Williams GVM, Reiser U, Edgar A, Appl Phys Lett , 91(2007) (12)1910.

  • Sahare PD, Singh M, Kumar P, RSC Adv, 5(5) (2015) 3474.

  • Sahare PD, Ali N, Rawat NS, Bahl S, Kumar P, J Lumin,174 (2016) 228.

  • Barve R, Patil RR, Rawat NS, Gaikwad NP, Pradeep R, Bhatt BC, Moharil SV, Kulkarni MS NuclInstrum Methods Phys Res B, 289 (2012) 100.

  • Dhabekar B, Menon SN, Raja AE, Bakshi AK, Singh AK, Chougaonkar MP, Mayya YS NuclInstrum Methods Phys Res 269 (6) (2011)1844.

  • Kulkarni MS, Muthe KP, Rawat NS, Mishra DR, Kakade MB, Ramanathan S, Gupta SK, Bhatt BC, Yakhmi JV, Sharma DN RadiatMeas, 43 (2008) 492.

  • Barve RA, Patil RR, Moharil SV, Gaikwad NP, Bhatt BC, Pradeep R, Mishra DR, Kulkarni MS, RadiatProtDosim, 163 (4) (2015) 439.

  • Soni A, Muthe KP, Kulkarni MS, Mishra DR, Bhatt BC, Gupta SK, Yakhmi JV, Sharma DN J Lumin,130 (2010) 1308.

  • Lee JI, Pradhan AS, Kim JL, Chang I, Kim BH, Chung KS, Radiat Meas 56(2013) 217.

  • Bos AJ, Prokic M, Brouwer, JC Radiat Prot Dosim 119 (2006)130.

  • MURTY, R C, Nature, 207 (1965) 398.

  • Martina Saran, M Sc, Ph D student, PD Sahare, Ph D, Professor, Vishnu Chauhan,Ph D,Post-Doc, Rajesh Kumar, Ph D, Associate Professor, Nandkumar T Mandlik, PhD,Professor, Journal of Luminescence 238 (2021) 118.

  • Sigh Manveer, PD Sahare, and Pratik Kumar, Radiation Measurements, 59 (2013) 8.

  • E G Yukihara and S W S McKeever, Phys Med Biol , 53 (2008) R351.


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  • OSL Characteristics of Cu Activated NaLi2po4 Phosphor

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Authors

Bhuli Bai
Department of Physics & Astrophysics, University of Delhi, Delhi 110 007, India
P. D. Sahare
Department of Physics & Astrophysics, University of Delhi, Delhi 110 007, India

Abstract


Cu-activated NaLi2po4 phosphor material was successfully synthesized through solid state diffusion method. It was mainly doped with Cu2Cl2 and CuCl2 salts for impurities in the form of Cu+ and Cu2+ respectively. Powder X-ray Diffraction (PXRD) was carried out for the confirmation of single phase of synthesized phosphor material. Dosimetric properties of the material were investigated using the Optically Stimulated (OSL) techniques. We have found maximum sensitivity of Cu2+: NaLi2po4 samples at concentration 1000ppm (0.1 mol%) in OSL with annealing temperatures 1073K. Whereas for Cu+: NaLi2po4 samples, 873K was considered as the optimization annealing temperature with impurity concentrations 0.08mol%. The phosphor material exhibits good dosimetric characteristics. It was found that NaLi2po4:Cu2+ is little less (3 times) and NaLi2po4: Cu+ is 4.2 times less sensitive than that of STD. Al2O3:C (Landauer Inc., USA) respectively. For further OSL studies only NaLi2po4:Cu2+ used. Low TL fading, forNaLi2po4:Cu+, only 10.74% fading takes place in 10days after that it negligibly fade. Also, wide OSL dose response (10-15kGy), easy optically bleaching for reusability and easy to handle are some of the other significant qualities observed in our samples. Simple method of preparation and tissue equivalence (Zeff~10.8) adds on the advantages of NaLi2po4: Cu phosphor. This type of phosphor is also suitable for high energy radiation dosimetry used in OSL techniques.

Keywords


Optically Stimulated Luminescence (OSL), Dosimetry, Phosphor, Solid State Diffusion, NaLi2po4: Cu, Sensitivity, Reusability, Optically Bleaching.

References