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arXiv · 2003.03820

Classical spectral sum rules and "half-naked" electron effects in radiation from relativistic electrons in external field

Xavier Artru
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Abstract

Two properties of the radiation emitted by a relativistic electron in an external field, in the classical approximation, are presented in details: 1) spectral sum rules and their relationship with the sum rules for oscillator strength in atomic physics. Filtered sum rules can be used to remove infrared or ultraviolet divergences. 2) "half-naked electron" effects like the Landau- Pomeranchuk-Migdal and Ternovskij-Shul'ga-Fomin effects. These properties are best understood when introducing the apparent transverse velocity.

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Xavier Artru. 2020-03-08. Classical spectral sum rules and "half-naked" electron effects in radiation from relativistic electrons in external field. https://doi.org/10.1088/1748-0221/15/04/c04042

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