Possible Systematic Effects in Fomblin Coated Storage Cell Neutron Lifetime Measurements

Physics – Nuclear Physics – Nuclear Experiment

Scientific paper

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

Scientific paper

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.

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