A remarkable focusing property of a parabolic mirror for neutrons in the gravitational field: Geometric proof

作者：Masalovich S^*

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2014, 763: 517-520.

DOI：10.1016/j.nmia.2014.07.004

• Ultracold neutrons
• Gravitational field
• Parabolic mirror
• Neutron microscope
• Electron optics
• Ion optics

An extraordinary focusing property of a parabolic mirror for ultracold neutrons in the presence of the gravitational field was first reported by 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 passing a point of return in the gravitational field in between. The present note offers a complementary geometric proof of this feature and discusses its application to many-mirror systems. The results can also be applied to electrons and ions in an electric field.

• 出版日期2014-11-1