diffusion pump

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diffusion pump [də′fyü·zhən ‚pəmp]

(engineering)

A vacuum pump in which a stream of heavy molecules, such as mercury vapor, carries gas molecules out of the volume being evacuated; also used for separating isotopes according to weight, the lighter molecules being pumped preferentially by the vapor stream.

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No references found			The oil chamber holds approximately 1 L of diffusion pump oil ("Octoil S" or di 2 ethylhexyl sebacate). Two primary standards for low flows of gases by Tison, Stuart A. / Journal of Research of the National Institute of Standards and Technology Moreover, to get rid of the trace of para-xylene remaining between segments, a silicon-oil diffusion pump was used to reach a vacuum of [10. Influence of intermolecular entanglements on crystallization behavior ... by Fan, Zhongyong; Wang, Yiren; Bu, Haishan / Polymer Engineering and Science Following action by the turbo pump, the diffusion pump brings an extremely deep vacuum, usually required for annealing titanium parts, which need a deeper vacuum than stainless steel, according to Pfluger. A clean bill of health for medical parts: in-house annealing makes ... by Tooling & Production			diffusion capacitance Diffusion Chamber diffusion cloud chamber Diffusion Coating diffusion coefficient diffusion constant diffusion current diffusion diagram diffusion diameter diffusion disk diffusion equation diffusion extraction diffusion flame diffusion gradient diffusion hygrometer diffusion kernel diffusion length diffusion lens diffusion number Diffusion of Neutrons Diffusion of Power Theory diffusion plant diffusion potential Diffusion Pressure Deficit Diffusion Processes diffusion pump diffusion respiration diffusion streak diffusion theory diffusion transistor diffusion velocity Diffusion Welding diffusion-limited aggregation diffusion-limited current density diffusion-transfer process Diffusionism diffusiophoresis diffusive equilibrium diffusivity diffusivity analysis difunctional molecule dig dig-down pit digallic acid Digambara digamma function digastric Digby, George Digby, John Digby, Kenelm Henry Digby, Sir Kenelm			Diffusion Linge Médical Diffusion Matériel Bureau et Électronique Diffusion Matériel Industriel de Bureau Diffusion Matériel Travaux Publics Diffusion Matériels Frigorifiques Diffusion Metal Oxide Semiconductor Diffusion Mobilier de France et d'Europe Diffusion MRI Diffusion Multi-Layer Sampler diffusion number Diffusion of Effective Behavioral Interventions diffusion of gases Diffusion of innovations Diffusion of Neutrons Diffusion of Power Theory Diffusion of responsibility Diffusion Ordered Spectroscopy Diffusion Oxygenated Float Zone diffusion plant diffusion potential Diffusion Pressure Deficit Diffusion Prestation Fiabilité Diffusion process Diffusion processes Diffusion processes Diffusion processes Diffusion processes diffusion pump Diffusion Quantum Monte Carlo diffusion range diffusion ranges diffusion respiration diffusion respiration diffusion streak Diffusion tensor imaging Diffusion tensor imaging Diffusion tensor imaging Diffusion Tensor Magnetic Resonance Diffusion Tensor Magnetic Resonance Imaging diffusion theory Diffusion Thermique Ouest Diffusion Transfer Technology Diffusion transistor Diffusion Universitaire Ciaco diffusion velocity Diffusion Wave Spectroscopy Diffusion Welding Diffusion Welding Diffusion, Information et Communication Diffusion- and Convection-Dependent Inhomogeneity Diffusion-barrier Diffusion-Based Clock Synchronization Diffusion-Enhanced Fluorescence Energy Transfer Diffusion-Enhanced Luminescence Energy Transfer Diffusion-limited aggregation Diffusion-limited aggregation Diffusion-Limited Cluster Aggregation

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