diffuusionpumpput

Diffuusionpumpput is not a recognized term in standard vacuum technology or pump nomenclature. In published literature and vendor catalogs there is no device by this exact name, and the string appears more likely to be a misspelling, translation artifact, or a nonstandard blend of terms related to diffusion pumps. As such, there is no established definition or specification associated with this term in authoritative sources.

A diffusion pump, which is the closest well-known concept, is a high-vacuum pump that uses a heated oil vapor to entrain gas molecules and direct them toward the pump’s exhaust. The oil vapor is projected through a nozzle plate, creating a jet that captures surrounding gas molecules. The vapor then condenses away from the chamber, typically at a cold trap or baffle to limit backstreaming. Diffusion pumps require a forepump to reach their operating range and rely on careful oil selection, maintenance, and oil management. Typical pump performance reaches high vacuum levels, commonly in the 10^-3 to 10^-7 mbar range, but with limitations in efficiently handling hydrogen and helium.

If the term appears in a document, it is advisable to treat it as a probable misspelling or misreference to a diffusion pump or a diffusion-pump assembly rather than a distinct technology. Modern vacuum systems more frequently use turbomolecular or hybrid pump configurations, with diffusion pumps retained for specific legacy applications and well-understood maintenance practices.