The kinetics of the decay of the luminescence of Fe 2+ ions is measured at nitrogen temperature in polycrystalline ZnSe excited by a short pulse of accelerated electrons. The time dependence of the luminescence intensity differs from the exponential one, observed upon excitation of luminescence by a short light pulse. The obtained nonexponential dependence is theoretically described. The explanation is based on the quenching effect of the excited state of the Fe 2+ ion by free electrons of the volume charge of the current of accelerated electrons in the sample (Auger effect). It was shown that the relaxation of the volume charge after the electron-accelerating voltage is removed makes a significant contribution to the decay kinetics of the impurity luminescence.

中文翻译：

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电子束激发下多晶ZnSe中Fe 2+杂质中心的发光衰减动力学

在氮气温度下，通过短加速电子脉冲激发的多晶ZnSe中，测量了Fe 2+离子发光衰减的动力学。发光强度的时间依赖性不同于指数强度，这是通过短光脉冲激发发光而观察到的。理论上描述了获得的非指数相关性。解释是基于样品中加速电子电流的体积电荷的自由电子对Fe 2+离子激发态的猝灭效应（俄歇效应）。结果表明，去除电子加速电压后，体积电荷的弛豫对杂质发光的衰减动力学有重要贡献。