New ambient pressure photoemission endstation at Advanced Light Source beamline 9.3.2
AuthorsGrass, Michael E.
Karlsson, Patrik G.
Mun, Bongjin S.
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AbstractDuring the past decade, the application of ambient pressure photoemission spectroscopy (APPES) has been recognized as an important in situ tool to study environmental and materials science, energy related science, and many other fields. Several APPES endstations are currently under planning or development at the USA and international light sources, which will lead to a rapid expansion of this technique. The present work describes the design and performance of a new APPES instrument at the Advanced Light Source beamline 9.3.2 at Lawrence Berkeley National Laboratory. This new instrument, Scienta R4000 HiPP, is a result of collaboration between Advanced Light Source and its industrial partner VG-Scienta. The R4000 HiPP provides superior electron transmission as well as spectromicroscopy modes with 16 μm spatial resolution in one dimension and angle-resolved modes with simulated 0.5° angular resolution at 24° acceptance. Under maximum transmission mode, the electron detection efficiency is more than an order of magnitude better than the previous endstation at beamline 9.3.2. Herein we describe the design and performance of the system, which has been utilized to record spectra above 2 mbar. © 2010 American Institute of Physics.
CitationGrass ME, Karlsson PG, Aksoy F, Lundqvist M, Wannberg B, et al. (2010) New ambient pressure photoemission endstation at Advanced Light Source beamline 9.3.2. Review of Scientific Instruments 81: 053106. Available: http://dx.doi.org/10.1063/1.3427218.
SponsorsWe would like to thank Hendrik Bluhm, David A. Kilcoyne, John Pepper, and Monroe Thomas for their generous help during setup of the endstation. The ALS and the Molecular Foundry are supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Some additional funds were provided by the King Abdullah University of Science and Technology (KAUST). B.S.M. would like to thank the support by the Korea Research Foundation (KRF) grant funded by the Korean government (MEST) (Grant No. 2009-0068720). M.E.G. would like to thank the support of the ALS Postdoctoral Fellowship program.
JournalReview of Scientific Instruments
CollectionsPublications Acknowledging KAUST Support
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