diffusion pump
- noun
- /dɪˈfjuːʒən pʌmp/
- Specialized
:
bomba de difusión
- To create a high vacuum environment, the engineer installed a diffusion pump that utilizes a jet of vapor.
Examples
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We also remanufacture your cryogenic, rotary vane, dry, rotary piston, and diffusion pumps in-house to meet or exceed all manufacturers' performance specifications.
Academic text (2004) -
By using a diffusion pump, the scientists effectively removed unwanted gas molecules from the chamber.
-
The laboratory relies on a diffusion pump to achieve the high vacuum necessary for their experiments.
Synonyms
266
2.1
A machine that moves water or air to another place
1
3.6
A machine that removes air or gas from a closed space so there is almost no air left
Surface Forms
Morphology
The compound is partially compositional: a learner who knows 'diffusion' (particle movement from high to low concentration) and 'pump' (a machine that moves fluids) can infer it is a type of pump involving particle movement, so the general idea is accessible. However, the specific technical mechanism (a vacuum pump using a vapor jet to capture gas molecules) is specialized and not predictable from the constituents alone, so full meaning requires domain knowledge.
Etymology
Diffusion pump comes from how it works: a jet of hot vapor spreads out, which is diffusion, and pushes gas down so the pump can carry it away. So the name shows that this machine uses spreading vapor to remove air and make a 'high vacuum'.