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Figure 2
Schematics of the gas sample environment chamber. NV: manual needle valve; VC: vacuum chamber (pressure Pf); CG: capacitive gauge (pressure Pe); WlC: windowless cell (pressure Pc); T1: entrance pipe (conductance Ce); Ca1, Ca2, Ca3, Ca4: rectangular section capillaries with conductances of C1, C2, C3, C4, respectively; WiC: switchable windowed cell; LN2: liquid-nitrogen jacket. IP are the two 500 l s−1 ionic pumps of the second stage of differential pumping. TP1 and TP2 are the turbo pumps for the main chamber (1500 l s−1) and for the free jet setup (500 l s−1), respectively. If necessary, TP2 can be switched to a 600 m3 h−1 roots pump without breaking the vacuum. GS: gas supply, for connecting either a gas cylinder or a glass reservoir in order to operate with the vapour pressure of liquid samples. The total length of the vacuum chamber is 1.6 m.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 23| Part 4| July 2016| Pages 887-900
doi:10.1107/S1600577516006135
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