A NEW HIGH VACUUM SYSTEM
- 1 December 1931
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 2 (12) , 773-784
- https://doi.org/10.1063/1.1748752
Abstract
A new high vacuum pumping system is described in which oil* is used in a diffusion type pump, and a trap containing activated cocoanut charcoal replaces the usual liquid air trap. The system is capable of attaining a pressure of 2×10−8 mm Hg. A high degree of vacuum can be attained at least as quickly as with a mercury diffusion pump and liquid air trap. The system is especially adapted to maintaining a low pressure for several days in apparatus which cannot conveniently be sealed off from the pumps.Keywords
This publication has 1 reference indexed in Scilit:
- Some experiments on vacuum distillationProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1929