Monday, July 22, 2013

1307.5207 (A. Steyerl et al.)

Spin flip loss in magnetic storage of ultracold neutrons    [PDF]

A. Steyerl, C. Kaufman, G. Müller, S. S. Malik, A. M. Desai
We analyze the depolarization of ultracold neutrons confined in a magnetic field configuration similar to those used in existing or proposed magneto-gravitational storage experiments aiming at a precise measurement of the neutron lifetime. We use an approximate quantum mechanical analysis such as pioneered by Walstrom \emph{et al} [Nucl. Instrum. Methods Phys. Res. A 599, 82 (2009)]. Our analysis is not restricted to purely vertical modes of neutron motion. The lateral motion is shown to cause the predominant depolarization loss in a magnetic storage trap.
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