K₂Ca₂(SO₄)₃:Eu nanophosphor was synthesized by chemical coprecipitation method and annealed at different temperatures from 400 to 900 °C. The nanophosphor annealed at 600 °C showed cubic structure with crystallite size ~25 nm. TEM shows morphology of K₂Ca₂(SO₄)₃:Eu nanophosphor was in the form of nanorods having diameter ~20 nm and length of ~100–200 nm. These samples were irradiated with gamma radiation for the doses varying from 10 mGy to 10 kGy and their Thermoluminescence (TL) and continuous-wave optically stimulated luminescence (CW-OSL) have been studied. CW-OSL response was found to be maximal for the sample annealed at 600 °C. The TL glow curve of the nanophosphor apparently showed a major peak at around 160 °C accompanied by three low intensity peaks at ~75, 215 and 285 °C. The traps responsible for all the TL peaks in K₂Ca₂(SO₄)₃:Eu were also found to be OSL sensitive. The qualitative correlation between TL peaks and CW-OSL response suggested that the traps associated with low temperature peaks are responsible for fast decay and the traps associated with the higher temperature peaks are responsible for slow decay of the OSL signal. OSL response showed linear behavior up to 1 kGy and saturated with further increase in the gamma dose. The wide OSL response makes studied K₂Ca₂(SO₄)₃:Eu nanophosphor a good candidate for high dose measurement.

采用化学共沉淀法合成了K ₂ Ca ₂（SO ₄）₃：Eu纳米磷光体，并在400〜900°C的不同温度下进行了退火。在600°C退火的纳米磷光体显示立方结构，微晶尺寸约为25 nm。TEM显示K ₂ Ca ₂（SO ₄）_3的形态：Eu纳米磷光体呈直径约20 nm，长度约100–200 nm的纳米棒形式。用γ射线辐照这些样品，剂量从10 mGy到10 kGy不等，并且已经研究了它们的热致发光（TL）和连续波光激发发光（CW-OSL）。发现在600°C下退火的样品的CW-OSL反应最大。纳米磷光体的TL辉光曲线显然在160°C处显示出一个主要峰，在〜75、215和285°C处伴随着三个低强度峰。导致K ₂ Ca ₂（SO ₄）_3中所有TL峰的陷阱：Eu也被发现对OSL敏感。TL峰与CW-OSL响应之间的定性相关性表明，与低温峰相关的陷阱负责快速衰减，而与较高温度峰相关的陷阱负责OSL信号的缓慢衰减。OSL反应显示高达1 kGy的线性行为，并随着伽马剂量的进一步增加而饱和。宽广的OSL响应使研究的K ₂ Ca ₂（SO ₄）₃：Eu纳米磷光体成为高剂量测量的理想选择。