TL in halosulphate phosphors prepared by wet chemical method

¹ K.Z.S. Science College, Kalmeshwar, Nagpur 441501, India
² Kamla Nehru College, Sakkardara Sq. Nagpur 440009, India
³ Department of Physics, S.G.B. Amravati University, Amravati 444602, India
⁴ Department of Physics, Nagpur University, Nagpur 440 033, India

Corresponding author: gedam_sc@rediffmail.com

Received: 21 March 2007
Accepted: 19 April 2007
Published online: 28 June 2007

Abstract

Polycrystalline halosulphate phosphors are prepared by a wet chemical method. Strong thermoluminescence (TL) was observed in KZnSO₄Cl, KMgSO₄Cl, Na₃SO₄F and NaMgSO₄F hosts. In these hosts Ce, Dy; Ce, Mn and Ce, Tb the Ce³⁺ ions acting as sensitizers and Dy³⁺, Mn²⁺and Tb³⁺ ions as activators. The TL glow curves of these halosulphate phosphors exposed to γ-rays for 5 Gy at the rate of 0.995 kGyh^-1 are described and discussed first time here.