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The vacuum charge, Klein tunnelling and the Klein paradox

机译:真空装料,克莱因隧道效应和克莱因悖论

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The Klein paradox is reassessed by considering the properties of a finite square well or barrier in the Dirac equation. It is shown that spontaneous positron emission occurs for a well if the potential is strong enough. The vacuum charge and lifetime of the well are estimated. If the well is wide enough, a seemingly constant current is emitted. These phenomena are transient whereas the tunnelling first calculated by Klein is time independent. Klein tunnelling is an intrinsic property of relativistic wave equations. These ideas could in principle be tested in positron-heavy nucleus scattering. It is also possible that they have analogues in superfluid helium. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 16]
机译:通过考虑狄拉克方程中的有限方阱或势垒的性质来重新评估克莱因悖论。结果表明,如果电势足够强,就会发生自发正电子发射。估计孔的真空电荷和寿命。如果阱足够宽,则发射看似恒定的电流。这些现象是瞬态的,而克莱因首先计算出的隧道效应与时间无关。克莱因隧穿是相对论波动方程的一种固有性质。这些想法原则上可以在正电子-重核散射中进行测试。它们也可能在超流氦中具有类似物。 (C)1998 Elsevier Science B.V.保留所有权利。 [参考:16]

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