Thermoluminescence and Thermally Stimulated Exoelectron Emission in Glass and Sintered CaB4O7:CuCl2

Undoped and calcium doped borate glass system for thermoluminescent dosimeter

“…This good stability is an important point to be considered in the development of a TL dosimeter, once the presence of water causes an adverse effect on the TL efficiency of the material, associated with non-radiative relaxations during thermal stimulation [12]. [6,10,11] have studied the thermoluminescence of CaB 4 O 7 at great length. Recently, Sangeeta and Sabharwal [8] showed that the polycrystalline CaB 2 O 4 presents a TL intensity 50 times higher than barium metaborate BaB 2 O 4 [8,9].…”

“…Calcium tetraborate CaB 4 O 7 , glasses, and calcium metaborate CaB 2 O 4 , polycrystalline ceramics, are some of the most attractive systems among the borate compounds as they present a good chemical stability due to their very low hygroscopic nature [1,[8][9][10][11]. This good stability is an important point to be considered in the development of a TL dosimeter, once the presence of water causes an adverse effect on the TL efficiency of the material, associated with non-radiative relaxations during thermal stimulation [12].…”

“…Many authors have studied glass and polycrystalline ceramics of alkaline and alkaline earth borate compounds using the thermoluminescence (TL) technique [1][2][3][4][5][6][7][8][9][10][11]. These compounds usually have higher sensitivities when compared to LiF:Mg,Ti (TLD-100) material [1].…”

Thermoluminescence of SrB4O7:Dy

“…Among the tetraborates, strontium tetraborates is attractive, like other alkaline-earth borates such as MgB 4 O 7 and CaB 4 O 7 [1,[7][8][9], because it is not hygroscopic [10]. As to the SrB 4 O 7 , it has been reported that Ce and Sm doped compounds do not yield enough TL intensity to be used as dosimeters [11].…”

Thermoluminescent properties of Dy doped calcium borate based glass for dose measurement subjected to photon irradiation

“…It is noted that calcium borate glasses have good chemical stability that of an important consideration for developing alternative forms of dosimeter [1,[5][6][7][8]. As reported elsewhere, the luminescence spectra and the glow peak in TLDs arise mainly from the signal in the doped core [21].…”