Back to Materials Analysis and Spectroscopy Facility
Photo of Microscopy/Surface Analysis

Kratos X-ray Photoelectron Spectrometer – Axis Ultra DLD

Contact: Dr. Hugo Celio
Location: EER 6.636

Equipment Type:

Microscopy/Surface Analysis

Surface Analysis

Information the Equipment Can Provide

This multi-technique with photoelectron and ion spectroscopies, including surface-mapping capabilities, was purchased from Kratos Analytical in 2007 to determine surface elemental and composition analysis. Most samples can be analyzed in a non-invasive or non-destructive method. This instrument is equipped with additional techniques:

  • X-ray photoelectron spectroscopy (XPS) provides information on elemental composition and chemical bonding states of materials
  • Ultraviolet photoelectron spectroscopy (UPS) provides information on valence levels and work function measurements of materials
  • Low energy Ion Scattering spectroscopy (ISS) provides provide evaluation of the elemental composition and structure of solid surfaces
  • XPS mode is also capable of surface mapping to provide lateral distribution maps of elemental and chemical species at the surface

Key Features

  • Signal detected: Photoelectron from near surface atoms
  • Elements detected: From Lithium to heavy metals
  • Detection limits: 0.1 to 1 atomic %.
  • Depth resolution: 2 to 8 nm
  • Depth Profile: 0.5 nm/second using Argon ions
  • Lateral resolution: 15 to 500 microns

The Kratos XPS is also equipped with a set of chambers and a capsule (collectively called ROX interface) to transfer air sensitive samples from an argon (or nitrogen) filled glove box to the XPS surface analysis chamber, which is under ultra-high vacuum (UHV). The Rox Interface was designed and developed at the Texas Materials Institute (U.S. Patent Application Serial No. 14/445,650 filed July 29, 2014). Unlike commercial interfaces, the Rox interface was designed with a unique innovation, as it has a built-in semi-quantitative method to monitor sample transfer reliability and validity.

Fees and Policies

  • UT Users: $55/hour
  • Higher Education/State Agencies: $202/hour
  • Corporate/External Users: $202/hour

To become a new user of this facility, please read the Instrument Reservation Information page. If you are already a user you can make a reservation in FBS.