A differentially pumped electrostatic lens system for ... - inquimae

Rev. Sci. Instrum., Vol. 73, No. 11, November 2002
A differentially pumped electrostatic lens
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high-pressure photoemission system. Using this general approach,
it should be possible to make photoemission measurements
up to 100 mbar. Although our experiment has
been implemented at a synchrotron beamline, it should also
be possible to apply the same concepts with a conventional
small-spot x-ray source.
ACKNOWLEDGMENTS
The authors would like to thank Dr. C. H. Alfred Huan
and Dr. E. D. Moler for an introduction to synchrotron experiments
and assistance with beamline 9.3.2. Dr. Eli Rotenberg
provided advice and LABVIEW source code for controlling
the hemispherical analyzer. Ed Wong built many parts
for the HPPES system and cheerfully responded to emergency
requests. This work was supported by the Director,
Office of Science, Office of Basic Energy Sciences, Materials
Sciences Division of the U.S. Department of Energy under
Contract No. DE-AC03-76SF00098.
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17 PHI 360 SCA with Omni IV input lens and a 16 anode channel-plate
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18 MacroTorr 250, Varian Vacuum Technologies, Lexington, MA.
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