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- W800871344 abstract "A method eliminates (or recovers from) residual methane buildup in getter-pumped atomic frequency standard systems by applying ionizing assistance. Ultra-high stability trapped ion frequency standards for applications requiring very high reliability, and/or low power and mass (both for ground-based and space-based platforms) benefit from using sealed vacuum systems. These systems require careful material selection and system processing (cleaning and high-temperature bake-out). Even under the most careful preparation, residual hydrogen outgassing from vacuum chamber walls typically limits the base pressure. Non-evaporable getter pumps (NEGs) provide a convenient pumping option for sealed systems because of low mass and volume, and no power once activated. An ion gauge in conjunction with a NEG can be used to provide a low mass, low-power method for avoiding the deleterious effects of methane buildup in high-performance frequency standard vacuum systems." @default.
- W800871344 created "2016-06-24" @default.
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- W800871344 date "2010-08-01" @default.
- W800871344 modified "2023-09-26" @default.
- W800871344 title "Ionization-Assisted Getter Pumping for Ultra-Stable Trapped Ion Frequency Standards" @default.
- W800871344 hasPublicationYear "2010" @default.
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