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Surface Sciences

ESCALAB 250Xi X-ray Photoelectron Spectrometer (XPS) Microprobe

Meet your demands for increased analytical performance and flexibility with the Thermo Scientific™ ESCALAB™ 250Xi X-ray Photoelectron Spectrometer (XPS) Microprobe, which combines high sensitivity with high resolution quantitative imaging and multi-technique capability.

Description

Equipped with a micro-focusing X-ray monochromator designed to deliver optimum XPS performance, the ESCALAB 250Xi X-ray Photoelectron Spectrometer (XPS) Microprobe ensures maximum sample throughput. The multi-technique capability and availability of a range of preparation chambers and devices provides the solution to any surface analytical problem. Using the advanced Avantage data system for acquisition and data processing, maximum information is extracted from the data.

The ESCALAB 250Xi X-ray Photoelectron Spectrometer (XPS) Microprobe Features:

• High sensitivity spectroscopy
• Small area XPS
• Depth profiling capability
• Angle resolved XPS
• Ion scattering spectroscopy (ISS) in base system
• Reflected electron energy loss spectroscopy (REELS) in base system
• “Preploc” chamber in base system
• Multi-technique analytical versatility
• Many sample preparation options
• Automated, unattended analysis
• Multiple sample analysis

X-ray Monochromator

• Twin-crystal, micro-focusing monochromator has a 500mm Rowland   circle and uses an Al anode
• Sample X-ray spot size is selectable over a range of 200 to 900μm

Lens, Analyzer and Detector

• Lens/analyzer/detector combination makes the ESCALAB 250Xi XPS   Spectrometer unique for both imaging and small area XPS
• Two types of detectors ensures optimum detection for each type of   analysis — two-dimensional detector for imaging and a detector based   on channel electron multipliers for spectroscopy when high count rates   are to be detected
• Lens is equipped with two, computer-controlled iris mechanisms — one   allows the user to control the field of view of the lens down to <20μm for   small area analysis and the other to control the angular acceptance of the   lens, which is essential for high-quality angle resolved XPS
• 180° hemispherical energy analyzer

Depth Profiling

• Digitally-controlled EX06 ion gun is a high-performance ion source even   when using low energy ions
• Azimuthal sample rotation is available
• Multi-technique capability
• Other analytical techniques accommodated without compromise to the   XPS performance
• Reverse power supplies for the lenses and analyzer using the EX06 ion   gun (ion scattering spectroscopy (ISS) is always available)
• Electron gun can be operated at up to 1000V and provides an excellent   source for REELS

Technique Options

• XPS with non-monochromatic X-rays
• AES (Auger electron spectroscopy)
• UPS (Ultra-violet photoelectron spectroscopy)

Vacuum System

• 5mm thick mu-metal analysis chamber maximizes efficiency of magnetic   shielding
• Increased effectiveness compared to shielding methods that use internal   or external shields

Sample Preparation

• Combined entry lock and preparation chamber form part of the base   system
• Additional preparation chambers are available

Avantage Data System

• Integrates all aspects of the analysis, including instrument control, data   acquisition, data processing and reporting
• Allows remote control and easy interfacing to third-party software such as   Microsoft Word
• Manages total analysis process from sample to report

             
 
ESCALAB 250Xi X-ray Photoelectron Spectrometer (XPS) Microprobe

X-ray Photoelectron Spectrometer

• K-Alpha™+ X-ray   Photoelectron   Spectrometer (XPS)   System

• ESCALAB 250Xi X-ray   Photoelectron   Spectrometer (XPS)   Microprobe

• Theta Probe Angle-  Resolved X-ray   Photoelectron   Spectrometer (ARXPS)   System

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