U41-PEAXIS

PEAXIS - Combined RIXS and XPS

U41-PEAXIS beamline is one of the highest flux beamlines at BESSY II. It provides highly focused soft X-rays, thanks to the ellipsoidal refocusing mirror. The beamline is connected to a fixed endstation PEAXIS that is dedicated to studies of angle-resolved RIXS (Resonant Inelastic X-ray Scattering) and PES (PhotoElectron Spectroscopy) on solids.

Beamline layout

Beamline layout


Station data
Temperature range 20 ~ 1000 K
Pressure range 10-8 ~ 10-9 mbar
Weitere Details PEAXIS
Beamline data
Segment L06
Location (Pillar) 7.2
Source U41 (Undulator)
Monochromator 800 l/mm PGM
Energy range 180 eV - 1600 eV (RIXS: 200 eV - 1200 eV)
Energy resolution E/ΔE@400 eV: 6500 to 14000
E/ΔE@867 eV: 5500 to 9500
(depending on setup)
Flux photons (s-1 (250 mA ring current)-1) at sample:
@400 eV: 1.4*1012 to 2.4*1011
@900 eV: 4.6*1011 to 7.7*1010
(depending on setup)
Polarisation horizontal
Divergence horizontal -- mrad
Divergence vertical -- mrad
Focus size (hor. x vert.) 15 µm x 4 µm
User endstation not possible
Distance Focus/last valve 750 mm
Height Focus/floor level 1410.6 mm
Beam availability 12h/d
Phone (030) 8062-13154
Photon flux at sample position for standard operation mode

Photon flux at sample position for standard operation mode

Beamline resolution @ 401 eV

Beamline resolution @ 401 eV

Beamline resolution @ 867 eV

Beamline resolution @ 867 eV

Focal spot @ 400 eV and slit 20 µm

Focal spot @ 400 eV and slit 20 µm