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arXiv · 1404.3550

A unique focusing property of a parabolic mirror for neutrons in the gravitational field: geometric proof

S. Masalovich
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Abstract

An extraordinary focusing property of a parabolic mirror for ultracold neutrons in the presence of the gravitational field was first reported by A. Steyerl and co-authors. It was shown that all neutrons emitted from the focus of the mirror will be reflected back upon the same focus point passing, in between, a point of return in the gravitational field. The present note offers a complementary geometric proof of this feature and discusses some implications.

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S. Masalovich. 2014-04-14. A unique focusing property of a parabolic mirror for neutrons in the gravitational field: geometric proof. https://doi.org/10.1016/j.nima.2014.07.004

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