high vacuum


Also found in: Acronyms.

high vacuum

[′hī ¦vak·yüm]
(physics)
A vacuum with a pressure between 1 × 10-3 and 1 × 10-6 mmHg (0.1333224 and 0.0001333 pascal).
References in periodicals archive ?
Project Name: Beijing normal university, Ultra high vacuum molecular beam epitaxy thin film preparation system project
Vacuum pumps provide high vacuum levels at moderate volume flow rates--these are used for applications such as drying, degassing, extrusion calibration, and vacuum forming.
1) Possible to measure a wide range (atmospheric pressure to high vacuum range; 5 x 10-8Pa)
The pump is suitable in industry and laboratories for production of medium and high vacuum.
Swedish technology group Nederman Holding AB said on Monday (7 January) that it has acquired the high vacuum products manufacturer Toredal Verkstad AB.
John Bullough, Nederman UK's technical manager, comments: "The L-shape of the new facility provides a much longer (20 metres compared with eight metres) run of ducting for our high vacuum extraction system demonstrations.
The completely inert material will not outgas in ultra high vacuum and is unreactive with most molten metals, salts and acids.
These motors offer velocities from 1 [micro]m/sec to 250mm/sec, with current load ratings from l5mA to lA, and are offered in two vacuum grad es - high vacuum compatibility down to [10.
They are particularly well-suited for leak detection, mass spectrometers, electron microscopes and high vacuum chambers in industrial, instrumentation and research and development applications.
4) it follows that the apparatus should consist of 2 gloveboxes, One of which must be connected directly to a high vacuum coating chamber.
It does not need high vacuum to measure tiny concentrations of helium accurately.
18 -- Acmevac introduces Direct Drive; the oil sealed rotary high vacuum pumps.