Effect of Pr3+ concentration on thermoluminescence from K2Y1−xPrxF5 crystals

Judd–Ofelt analysis of spectroscopic properties of Sm3+ ions in K2YF5 crystal

“…The radiative transition rates (A R ), radiative lifetime ( R ), stimulated emission cross section ( P ), branching ratios (ˇR), and measured ratios (ˇm es ) were determined for the 4 G 5/2 by using Eq. (3), (7), (9), and (8), as displayed in Table 3.…”

“…Recently there are many reports on optical properties of the materials, such as the K 2 YF 5 :Nd 3+ , K 2 YF 5 :Pr 3+ , K 2 YF 5 :Tm 3+ , K 2 GdF 5 :Tb 3+ , and K 2 GdF 5 :Dy 3+ crystals [1][2][3][5][6][7]. The authors have investigated the optical properties of these materials by using optically stimulated luminescence (OSL) [8], thermoluminescence [9], frequency upconversion fluorescence [3], site-selective laser-excitation spectroscopy [10]. It is noted that K 2 YF 5 phases crystallize in orthorhombic system, each Y 3+ ion is surrounded by seven fluoride ions forming a C 2v local point symmetry.…”

Thermoluminescence properties of double potassium yttrium fluorides singly doped with Ce3+, Tb3+, Dy3+ and Tm3+ in response to and irradiation

“…[6,7], establish prerequisites for developing novel optical RE doped materials. However, up to now only a few papers concerning TL properties of complex RE fluorides have been published [8][9][10][11]. In this work the TL properties of yttrium fluorides KYF 4 and K 2 YF 5 singly doped with Ce 3+ , Tb 3+ , Dy 3+ or Tm 3+ after a or b irradiation have been studied to reveal dependence of the TL properties on the host, the RE ion and the specific radiation field.…”

Judd–Ofelt analysis of spectroscopic properties of Tm3+ ions in K2YF5 crystal

“…Up to now, there have been some publications on the spectroscopic properties of rare-earth ions-doped K 2 YF 5 crystals. For example, the Tb 3+ 5 D 3 -5 D 4 cross-relaxation process [3], the 4f 2 5d → 4f 3 interconfigurational transitions of Nd 3+ [4], the spectroscopic properties of Pr 3+ [2,[5][6][7][8], the spectroscopic studies and crystal field calculation for Nd 3+ [9] and Tm 3+ [10], the upconversion fluorescence of Nd 3+ [11] and Er 3+ [12] in K 2 YF 5 crystal hosts had been investigated.…”