Refrigeration of oil diffusion pump baffles

Barton, R.S.; Turnbull, A.H.

doi:10.1016/0042-207x(51)90062-0

Cited by 3 publications

(2 citation statements)

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“…Figure 10 is an example of the lengthwise variation of light intensity normalized to the value at the start of the beam. A corrections of cos 4 9 was applied to the data to allow for fall-off of the illumination on the film plane. 9 is the angle between the normal to the camera focal plane and the ray from the particular point on the beam being measured, and in these experiments had a maximrnu value of 110.…”

Section: Discussionmentioning

confidence: 99%

“…Suitable cold traps and baffles in the vacuum system are necessary to reduce the possibility of oil vapor migration from the pump into the electron gun vacuum system. 4 The vacuum equipment consists of a Z-inch, 3-stage, water-cooled fractionating oilvapor diffusion pump with a capacity of 50 -55 liters/second, as measured at the mouth of the baffle valve, and has an ultimate vacuum capacity of 5 x 10-7 mm Hg. The backup pump is a mechanical-rotary type having a displacement of 48 liters/minute.…”

Section: Electron Gun Vacuum Systemmentioning

confidence: 99%

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Flow Visualization and Quantitative Gas Density Measurements in Rarefield Gas Flows

MacArthur¹,

Stevenson²,

Budel³

1962

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Section: Discussionmentioning

confidence: 99%

Section: Electron Gun Vacuum Systemmentioning

confidence: 99%

Flow Visualization and Quantitative Gas Density Measurements in Rarefield Gas Flows

MacArthur¹,

Stevenson²,

Budel³

1962

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Applications of vacuum technique in atomic energy research

Turnbull¹

1955

Vacuum

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Solidification, processing and properties of ductile cast iron

Tiedje

2010

Materials Science and Technology

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Ductile cast iron has been an important engineering material in the past 50 years. In that time, it has evolved from a complicated material that required the foundry metallurgist's highest skill and strict process control to being a commonly used material that can easily be produced with modern process technology. Yet, for the skilled metallurgist and foundry engineer, it is a material that can be engineered to meet extreme demands with regard to mechanical properties and geometrical complexity. It is therefore a material that has been in growing use since its discovery. And the results of the latest years of research indicate that ductile cast iron in the future will become a highly engineered material in which strict control of a range of alloy elements combined with intelligent design and highly advanced processing allows us to target properties to specific applications to a much higher degree than we have seen previously. It is the aim of the present paper to present ductile iron as a modern engineering material and present the many different possibilities that the material hides. Focus will be on the latest research in solidification and melt treatment. But for completeness and to illustrate how ductile iron's properties are optimised, the essentials of heat treatment are described too. It is the hope that researchers will find a comprehensive treatment of ductile cast iron metallurgy and that engineers and designers will be presented with the latest information on, and references to, the properties and possibilities in ductile cast iron.

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Refrigeration of oil diffusion pump baffles

Cited by 3 publications

References 0 publications

Flow Visualization and Quantitative Gas Density Measurements in Rarefield Gas Flows

Flow Visualization and Quantitative Gas Density Measurements in Rarefield Gas Flows

Applications of vacuum technique in atomic energy research

Solidification, processing and properties of ductile cast iron

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