BL13-2

Overview

BL13-2 is an elliptically polarizing undulator (EPU) beamline dedicated for high energy resolution soft x-ray core-level spectroscopy. Its endstation features a versatile chamber capable of characterizing numerous samples simultaneously. It is equipped to measure XAS in various modes including Total Electron Yield (TEY), Partial Electron Yield (PEY), Total Fluorescence Yield (TFY), and Partial Fluorescence Yield (PFY). BL13-2 is also equipped with a Transition Edge Sensor (TES) spectrometer for x-ray emission spectroscopy (XES) and resonant inelastic x-ray scattering (RIXS) as well as Partial Fluorescence Yield (PFY), offering ultra-sensitive detection with a large solid angle and 1.5 eV resolution throughout the soft x-ray range. Heating (up to 110 °C) and cooling (down to 50 K with LHe, typically to 80 K with LN2) capabilities are available. In-situ capabilities are currently under development. For complex sample environments, such as sealed liquid or frozen liquid, please contact the beam line staff for more information.

 

Source —

26-pole elliptical polarizing undulator (EPU), 0.25 mrad acceptance

Status —

Operational

Beamline Parameters —

Energy Range Resolution ΔE/E Spot Size Flux (ph/sec)
Focused 180-1450 eV (XAS) 1 x 10-4 0.01 x 0.05 mm2 1011 - 1012 ph/sec

Optics —

M0 Mirror Monochromator Kirkpatrick-Baez Refocusing 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

Instrumentation —

Keithley Current Amplifier (Total Electron Yield)
Channeltron (Partial Electron Yield)
Silicon Diode AXUV100 (Total Fluorescence Yield)
TES Spectrometer (Partial Fluorescence Yield)

Sample Environment —

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


SPEAR3

Publications

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Science Highlights

For more science highlights visit this site.

In-situ X-ray Photoelectron Spectroscopy of a Catalyst for Artificial Photosynthesis
Hydrogen Adsorption Induces Interlayer Carbon Bond Formation in Supported Few-Layer Graphene
Direct Observation of the Oxygenated Species during Oxygen Reduction on a Platinum Fuel Cell Cathode
Tuning the Metal-Adsorbate Chemical Bond through the Ligand Effect on Platinum Subsurface Alloys
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