Vacuum Pressure Measurements using a Magneto-Optical Trap
Atomic Physics
2015-06-04 v1
Abstract
The loading dynamics of an alkali-atom magneto-optical trap can be used as a reliable measure of vacuum pressure, with loading time T indicating a pressure less than or equal to [2x10^(-8) Torr s]/T. This relation is accurate to approximately a factor of two over wide variations in trap parameters, background gas composition, or trapped alkali species. The low-pressure limit of the method does depend on the trap parameters, but typically extends to the 10^(-10) Torr range.
Keywords
Cite
@article{arxiv.1203.0189,
title = {Vacuum Pressure Measurements using a Magneto-Optical Trap},
author = {T. Arpornthip and C. A. Sackett and K. J. Hughes},
journal= {arXiv preprint arXiv:1203.0189},
year = {2015}
}
Comments
8 pages, 5 figures