Abstract
WORRELL'S recent communication1 on units in vacuum measurements directs attention to several anomalies tacitly accepted by many vacuum technologists. The use of molecular concentration as a measure of vacuum might be invaluable in some cases (for example, where a primary interest is in scattering of molecular or ionic beams, or in bimolecular particle reactions); nevertheless, the diversity of vacuum applications seems to have been overlooked. Apart from a few specialist studies, most vacuum technologists are more likely to be interested in vacuum per se than in pressure or molecular concentrations.
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References
Worrell, F. T., Nature, 199, 476 (1963).
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CUTHBERT, J. Units in Vacuum Measurements. Nature 201, 61 (1964). https://doi.org/10.1038/201061b0
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DOI: https://doi.org/10.1038/201061b0
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