Possible Systematic Effects in Fomblin Coated Storage Cell Neutron Lifetime Measurements

Steve K. Lamoreaux

Possible Systematic Effects in Fomblin Coated Storage Cell Neutron Lifetime Measurements

Nuclear Experiment 2008-04-08 v3

Authors: Steve K. Lamoreaux

Abstract

A new neutron lifetime experiment employing frozen Fomblin has produced a result in significant disagreement with previous experiments that used liquid Fomblin near room temperature. This new experiment is subject to very few corrections, so the source of the discrepancy is a mystery. Here we theoretically investigate several possible systematic effects for near-room-temperature storage experiments. By considering the combined effect of gravity with the usual ultracold neutron losses together with surface wave scattering loss and ultracold spectral evoltuion, a correction to a previous neutron lifetime experiment is found to be insignificantly small.

Keywords

neutron lifetime Fomblin storage cell systematic effects ultracold neutrons gravity

Cite

@article{arxiv.nucl-ex/0612004,
  title  = {Possible Systematic Effects in Fomblin Coated Storage Cell Neutron Lifetime Measurements},
  author = {Steve K. Lamoreaux},
  journal= {arXiv preprint arXiv:nucl-ex/0612004},
  year   = {2008}
}

Comments

9 pages, 4 figures Comments are now restricted to the Mampe et al. lifetime experiment

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