Quasielastic scattering in the interaction of ultracold neutrons with a liquid wall and application in a reanalysis of the Mambo I neutron-lifetime experiment
- Citation data:
Physical Review C, ISSN: 0556-2813, Vol: 85, Issue: 6
- Publication Year:
- Repository URL:
- https://digitalcommons.uri.edu/phys_facpubs/8; https://digitalcommons.uri.edu/cgi/viewcontent.cgi?article=1002&context=phys_facpubs
- Physics and Astronomy; Physics
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. 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. © 2012 American Physical Society.