XM - X-ray Microscopy

X-ray Microscopy

The full-field transmission X-ray microscope (TXM) is operated at the U41 undulator PGM beamline in the soft and tender X-ray range using partially-coherent object illumination. This setup allows for high resolution images of cryogenic thick biological specimens with 3-D resolution around 30 nm (half-pitch). Additionally, due to the high energy resolution spatially-resolved NEXAFS studies (NEXAFS-TXM) for material and energy sciences are possible. An incorporated fluorescence light microscope records fluorescence, bright field and DIC images of cryogenic samples (cells).

Anwendungsbeispiele:
  • X-ray nano-tomography of cells and porous materials
  • NEXAFS-TXM (spectro-microscopy) of nanoscale materials
  • In-situ investigation of catalytic materials
  • Electromigration and stress migration in semiconductors
  • Dichroism in materials
Optischer Aufbau des Röntgenmikroskopes und Experimentier-Methoden

Optischer Aufbau des Röntgenmikroskopes und Experimentier-Methoden


Methods

EXAFS, NEXAFS, X-ray Tomography, X-ray Microscopy, Fluorescence Imaging

Remote access

depends on experiment - please discuss with Instrument Scientist

Beamline data
Energy range 180 - 1800 eV (soft X-ray range) & 700 - 2800 eV (tender X-ray range)
Energy resolution up to 10000
Flux up to 4·1012 photons/sec @100 mA and 20 μm exit slit for cff = 2.25 directly after the exit slit
Polarisation horizontal
Focus size (hor. x vert.) 220 µm in exit slit
Phone +49 30 8062 12110
Weitere Details U41-TXM
Station data
Temperature range 100 K to room temperature
Pressure range samples under vacuum
Detector Thinned, backside illuminated CCD, 1340 pixel x 1300 pixel (Roper Scientific PI SX1300)
Manipulators Goniometer - CompuStage (FEI)
Sample holder compatibility Every FEI-CompuStage compatible holder could be used - but be careful: the sample holder orientation is rotated by 90°
Additional equipment • Tomography capability: tilt range -80 – +80 degree
• Incorporated fluorescence light microscope with LD objective (NA = 0.75)
• Preparation Lab: BioLab (restricted access) safety level S1; incubator; plasma cleaner; plunge freezer;
fluorescence light microscope LEICA DMI6000B;
cryo light microscopy stage
Schematischer Aufbau des im Röntgenmikroskop integriertem Lichtmikroskop

Schematischer Aufbau des im Röntgenmikroskop integriertem Lichtmikroskop

Technische Spezifikationen

Technische Spezifikationen

Der röntgenmikroskopische Meßplatz

Der röntgenmikroskopische Meßplatz


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