diffusion pump

The oil of a diffusion pump cannot be exposed to the atmosphere when hot.

The outside of the diffusion pump is cooled using either air flow or a water line.

The diffusion pump is widely used in both industrial and research applications.

Since the diffusion pumps have no moving parts, they are durable and reliable.

Older instruments may have used oil diffusion pumps for high vacuum regions.

This is because diffusion pumps have the ability to create both high and ultra-high vacuum.

The oil diffusion pump is operated with an oil of low vapor pressure.

One major disadvantage of diffusion pumps is the tendency to backstream oil into the vacuum chamber.

In modern text books, the diffusion pump is categorized as a momentum transfer pump.

Most modern diffusion pumps use silicone oil or polyphenyl ethers as the working fluid.

The two main types of molecular pumps are the diffusion pump and the turbomolecular pump.

A very common surface contamination is due to a film of pump-oil acquired from the diffusion pumps, which gives a prominent carbon 1s signal.

The steam ejector is a popular form of diffusion pump for vacuum distillation and freeze-drying.

His first major development was the improvement of the diffusion pump, which ultimately led to the invention of the high-vacuum tube.

I concentrated on the sides of the tunnel, building a parallel stack of power supplies, magnetic coils, and diffusion pumps.

Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump is typically used to maintain an outlet pressure around 0.1 mbar.

Mercury sphygmomanometers (blood pressure meter), barometers, diffusion pumps, coulometers, and many other laboratory instruments.

While vacuum pumps are of many kinds, oil diffusion pumps in combination with a fore pump are amongst those most popular.

Data presented in Table 3 demonstrates polyphenyl ether to be superior to other fluids that are commonly used in diffusion pumps.

If the diffusion pump is operating in the proximity of ionizing radiation source, good radiation stability is also desired.

To create a safer alternative to toxic mercury diffusion pumps, Mr. Lafler concocted a glass oil pump.

Diffusion pumps blow out gas molecules with jets of oil or mercury, while turbomolecular pumps use high speed fans to push the gas.

The development of the diffusion pump in 1915 and improvement by Irving Langmuir led to the development of high-vacuum tubes.

Silicone oil is also commonly used as the working fluid in dashpots, wet type transformers, diffusion pumps and in oil-filled heaters.

As the vapor jet hits the outer cooled shell of the diffusion pump, the working fluid condenses and is recovered and directed back to the boiler.