Surface roughness effect on ultracold neutron interaction with a wall and implications for computer simulations | Zendy

A. Steyerl | Zendy; S. S. Malik | Zendy; A. M. Desai | Zendy; Charles K. Kaufman | Zendy

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Surface roughness effect on ultracold neutron interaction with a wall and implications for computer simulations

Author(s) -

A. Steyerl,

S. S. Malik,

A. M. Desai,

Charles K. Kaufman

Publication year - 2010

Publication title -

physical review c

Language(s) - English

Resource type - Journals

eISSN - 1089-490X

pISSN - 0556-2813

DOI - 10.1103/physrevc.81.055505

Subject(s) - ultracold neutrons , neutron , neutron scattering , scattering , physics , surface roughness , reflection (computer programming) , surface finish , reflection coefficient , optics , computational physics , materials science , atomic physics , nuclear physics , quantum mechanics , computer science , composite material , programming language

We review the diffuse scattering and the loss coefficient in ultracoldneutron reflection from slightly rough surfaces, report a surprising reductionin loss coefficient due to roughness, and discuss the possibility of transitionfrom quantum treatment to ray optics. The results are used in a computersimulation of neutron storage in a recent neutron lifetime experiment thatre-ported a large discrepancy of neutron lifetime with the current particledata value. Our partial re-analysis suggests the possibility of systematiceffects that were not included in this publication.Comment: 39 pages, 9 figures; additional calculations include

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