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   Your location > Components > Spectroscopy > Time-of-Flight Spectrometers > THEMIS

Time of Flight (ToF) Spectrometer THEMIS 600/1000

THEMIS
 
Features:
  • Parallel angle and energy detection
  • Kinetic energy ranges 0 - 10eV, 0 - 100eV, 0 - 400eV,
    0 - 1500 eV, 0 - 3500eV
  • High energy option up to 15kV
  • Excellent energy and angular resolution
  • Angular and spatial resolving modes
  • 2D-DLD Detector
  • THEMIS 600 / 1000 have 100 mm or 150 mm mounting flanges, respectively
 

Product Information:

The THEMIS time-of-flight spectrometer series complements the SPECS photoemission spectrometer line with an instrument ideally suited for pulsed photon sources. The design of this state-of-the-art instrument is based on the renowned PHOIBOS 100/150/225 spectrometer series. The extensively optimized electron lens with the proven 2D-DLD detector technology enables most flexible operation, with experiments ranging from extreme resolution spectroscopy to highest transmission snapshots.


The angular cone and the length of the energy spectrum that can be acquired in parallel depends on the lens mode. Since the THEMIS lens is optimized for minimum chromatic aberrations, a very long energy window can be acquired in parallel. By choosing the lens parameters, the performance can be varied from extremely high transmission (full spectrum per shot) up to extreme energy resolution (selected small energy window per shot). The raw data from the detector (position and flight time for each electron) can be precisely transformed into emission angle and energy coordinates using a transformation matrix. This matrix is generated in-situ by an electron optics simulation engine integrated into the THEMIS software package.


Due to the high imaging quality of the THEMIS lens, the spectral and angular features of the experiment are immediately visible even in the non-transformed raw data.
THEMIS 1000 Data from a Cu(111) Surface
THEMIS 1000 data from a Cu(111) surface, wide angle mode with ±13° acceptance angle and 1.3-2.7eV kinetic energy window. Double pulse laser excitation with Eph1=4.66eV and Eph2=2.11eV, 200kHz.
Data courtesy of the Max Born Institut Berlin, group of Prof. Weinelt.



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THEMIS 600/1000
Product Brochure
THEMIS 600/1000 Product Brochure  
  
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