BL13-2

Overview
SPEAR3

26-pole Elliptical Polarizing Undulator (EPU), 0.25 mrad Acceptance

Beam line in transition.

The BL13-2 staiton has an APPES (ambient pressure photoemission spectroscopy) station with a differentially pumped electron spectrometer (SES-100, VG-Scienta). The station is designed for photoemission spectroscopy and Auger electron yield x-ray absorption spectroscopy measurements under near ambient conditions (up to 10 Torr). The APPES station provides the capability to investigate thermal catalytic and electrochemical processes under reactive conditions. The sample temperature can be varied from 300 K to 600 K under reactive conditions by a ceramic heater.

Sample Environment —

Sample requirement Non-Volatile, Non-Toxic
Sample temperature 300 - 600 K
Sample size < 5 x 5 mm2
Other UHV ~ 10 Torr

Instrumentation —

Ambient Pressure Photoemission System (APPES)

Technical Specifications

Energy —

Energy Range Resolution ΔE/E Spot Size Flux
Focused 270-1450 eV (XPS), 180-1450 eV (XAS) 1 x 10-4 0.01 x 0.075 mm2 1011 - 1012

Optics —

M0 Mirror Monochromator Kirkpatrick-Baez Mirror Pair (Pt)
Horizontal flat followed by a vertical sphere, both Pt coated Spherical Grating Monochrometer (SGM) 300 l/mm, Ni coated 600 l/mm, Ni coated 1100 l/mm, Pt coated LN2 cooled, Si(111), ϕ = 0o , Si(311), ϕ = 0o. double-crystal.

Publications

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Science Highlights

Beam Line 13-2 Science Highlights

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