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University of Rhode Island

Physics Faculty Publications

2012

Articles 1 - 1 of 1

Full-Text Articles in Physics

Quasielastic Scattering In The Interaction Of Ultracold Neutrons With A Liquid Wall And Application In A Reanalysis Of The Mambo I Neutron-Lifetime Experiment, Albert Steyerl, J. M. Pendlebury, Charles Kaufman, Surendra S. Malik, A. M. Desai Jun 2012

Quasielastic Scattering In The Interaction Of Ultracold Neutrons With A Liquid Wall And Application In A Reanalysis Of The Mambo I Neutron-Lifetime Experiment, Albert Steyerl, J. M. Pendlebury, Charles Kaufman, Surendra S. Malik, A. M. Desai

Physics Faculty Publications

We develop a theory of ultracold and very cold neutron scattering on viscoelastic surface waves up to second-order perturbation theory. The results are applied to reanalyze the 1989 neutron-lifetime experiment using ultracold neutron storage in a Fomblin-coated vessel by Mampe et al. [Phys. Rev. Lett. 63, 593 (1989)]. Inclusion of this theory of the quasielastic scattering process in the data analysis shifts the neutron lifetime value from 887.6 ± 3 to 882.5 ± 2.1 s.