Surface roughness effect on ultracold neutron interaction with a wall and implications for computer simulations
Other Condensed Matter
2010-12-23 v2 Nuclear Theory
Data Analysis, Statistics and Probability
Abstract
We review the diffuse scattering and the loss coefficient in ultracold neutron reflection from slightly rough surfaces, report a surprising reduction in loss coefficient due to roughness, and discuss the possibility of transition from quantum treatment to ray optics. The results are used in a computer simulation of neutron storage in a recent neutron lifetime experiment that re-ported a large discrepancy of neutron lifetime with the current particle data value. Our partial re-analysis suggests the possibility of systematic effects that were not included in this publication.
Keywords
Cite
@article{arxiv.0911.4115,
title = {Surface roughness effect on ultracold neutron interaction with a wall and implications for computer simulations},
author = {A. Steyerl and S. S. Malik and A. M. Desai and C. Kaufman},
journal= {arXiv preprint arXiv:0911.4115},
year = {2010}
}
Comments
39 pages, 9 figures; additional calculations included