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首页> 外文期刊>Philosophical Magazine Letters >Interband scattering of channelled electrons suffering high energy losses
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Interband scattering of channelled electrons suffering high energy losses

机译:遭受高能量损失的通道电子的带间散射

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An analysis has been made of the loss in fringe contrast, with increasing energy loss, observed in thickness fringes due to energy-filtered inelastically scattered electrons in a wedge foil of aluminium oriented to a (111) Bragg condition. The fringe amplitudes, observed in a transmission electron microscope equipped with an energy-loss spectrometer, result from intraband and interband scattering between dispersed Bloch waves. The analysis uses dynamical elastic scattering together with inelastic scattering. The impact parameter method is used to calculate interband transition rates from electron currents, with high-energy losses, distributed across the unit cell of the crystal. A good fit with experimental data is obtained.
机译:已经进行了分析,该结果是在取向为(111)布拉格条件的铝楔形箔片中,由于能量过滤后的非弹性散射电子,导致在条纹边缘对比度下降,并且能量损失增加。在配备有能量损耗光谱仪的透射电子显微镜中观察到的条纹幅度是由分散的布洛赫波之间的带内和带间散射引起的。该分析将动态弹性散射与非弹性散射一起使用。冲击参数方法用于根据分布在晶体晶胞中的电子流(具有高能量损耗)来计算带间跃迁速率。获得与实验数据的良好拟合。

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