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 —
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 |
Publications
Publications
Highlights
Science Highlights
We are in the process of porting over science highlights from our previous system. You can access new highlights and a portion or our catalog here.
For science highlights dated before 2021 visit this site. Use the filters to narrow down your search by year and beam line.