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Figure 4
(Left) Performance measurement of the present differential pumping system. The pressure distribution curves were measured for the atmospheric pressure of air (filled circles) and helium (filled triangles) conditions. The calculated pressure for the optimized design is also indicated for air (empty circles) and helium (empty triangles). (Right) Pumping speed curves of the vacuum pumps used in the present system.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 17| Part 2| March 2010| Pages 243-249
https://doi.org/10.1107/S0909049509052571
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