Research Resource Core Laboratory

PHI 5000 Versa Probe II


LEEP 2 Room G442


  • Scanned, micro-focused, monochromatic x-ray beam
  • Floating column argon ion gun
  • 20 kV electron gun
  • LaB6 emitter creates a raster-scanned electron beam focused on the Al anode of the x-ray source to produce a monochromated x-rays
  • Ellipsoidal shaped quartz crystal monochromator collects, filters, and refocuses x-rays onto the sample surface to scan and acquire the spectrum.
  • Dual-beam charge neutralization
  • Compucentric Zalar rotation
  • Sputter depth profiling (5V to 5000)
  • Angle-resolved spectroscopy
  • Chemical state imaging with 128 data channels
  • Elemental composition and chemical mapping with SXI (Secondary X-ray Imaging) and Scanning Electron Microscopy (SEM; using secondary electrons)
  • Five-axis automated sample manipulator
  • 25 mm and 60 mm diameter sample holders
  • Extra Sample Prep chamber with Heating, Cooling, and mixture of Gases 
  • X-ray beam size for XPS ranges from 9µ to 200µ and AES is scanned at 100nm
  • The instrument is driven by SmartSoft software data are acquired by Multipak Software tools developed by Physical Electronics

Workstation Specifications 

  Work Station

  • Xeon E5-1603
  • 4GB RAM
  • NVIDIA Quadro 410 graphics card
  • two-512GB SATA HDD RAID
  • Windows 7 32 bit.


Please contact Dr. Prem S. Thapa Chetri (Senior Electron Microscopist) or Dr. Eduardo Rosa-Molinar (Director/Professor) if you need further details.



Coming Soon... Hitachi H-8100!!

Hitachi H-8100 Transmission Electron Microscope 
·          75kV to 200kV thermionic emission (W hairpin filament)
·          Large specimen tilt (+/- 45 degrees) pole piece
·          In situ heating experiments with a heating stage (up to 900 degrees)
·          A cryo-TEM with a cryo-holder (down to -170 degrees)
·          A Gatan TV rate CCD camera for imaging (down to 0.5 nm resolution) and diffraction (large tilting with a Gatan double tilt holder)
·          A Silicon Drift Detector (SDD) for energy dispersive X-ray spectroscopy
·          Operation at low kV (75 and 100 kV) for soft- and bio-materials and 200 kV for inorganic materials
·          Convergent Beam Electron Diffraction (CBED), nanodiffraction capabilities
·          Hollow-Cone Illumination
More to come...


Dr. Prem S. Thapa Chetri

Senior Electron Microscopist


Dr. Eduardo Rosa-Molinar