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首页> 外文期刊>American journal of physics >Wave packet scattering from time-varying potential barriers in one dimension
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Wave packet scattering from time-varying potential barriers in one dimension

机译:一维时变势垒对波包的散射

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We discuss a solution of the time-dependent Schr?dinger equation that incorporates absorbing boundary conditions and a method for extracting the reflection and transmission probabilities for wave packets interacting with time-dependent potential barriers. We apply the method to a rectangular barrier that moves with constant velocity, an oscillating rectangular barrier, a locally periodic barrier with an amplitude modulated by a traveling wave, and a locally periodic potential with an amplitude modulated by a standing wave. Visualizations of the reflection phenomena are presented with an emphasis on understanding these systems from their dynamics. Applications to non-stationary neutron optics experiments are discussed briefly.VC 2014 American Association of Physics Teachers.
机译:我们讨论了包含吸收边界条件的时变薛定er方程的解,以及提取与时变势垒相互作用的波包的反射和透射概率的方法。我们将该方法应用于以恒定速度运动的矩形势垒,振荡矩形势垒,振幅由行波调制的局部周期性势垒和振幅由驻波调制的局部周期性势。呈现反射现象的可视化,重点是从它们的动力学理解这些系统。简要讨论了在非平稳中子光学实验中的应用。VC2014年美国物理教师协会。

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