An effusive limit in ultra-low pressure fluid flow is the limit at which a gas of certain molecular weight is able to expand into a vacuum such as a molecular beam line.
References
- Osborn D., Zou P. Johnsen H., et al. (2008), "The multiplexed chemical kinetic photoionization mass spectrometer: A new approach to isomer-resolved chemical kinetics ", AIP Review of Scientific Instruments, 79(28) . Retrieved on 31 January 2017
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