MCES150 Electron Source  | © Scienta Omicron
MCES150 electron source.
MCES150 Ibach type double monochromator with lens  | © Scienta Omicron
MCES150 Ibach type double monochromator with lens

MCES150

HREELS: Measuring Phonon Dispersion

PESARPES

  • Monochromated electron source for HREELS
  • Integrated with Scienta Omicron analysers (DA30-L, DA20)
  • Parallel readout, fast measurement
  • Ultra-stable HV electronics and automatic tuning
  • Variable primary electron energy

The MCES150 is a collimated and monochromatic electron source with an extremely narrow energy distribution. This type of source forms the base for a high resolution electron energy loss spectroscopy (HREELS). The combination with a Scienta Omicron high resolution ARPES analyser creates an efficient platform for vibrational spectroscopy and phonon dispersion measurements. The analyser 2D detector system enables massive parallel readout and reduces the measurement time by orders of magnitude compared to the traditional approaches.

More Information

Integration with the ARPES Lab

The MCES150 is easily integrated with the ARPES Lab. It requires an additional flange orthogonal to the analyser port and is compatible with low temperature manipulators used in the ARPES-Lab system. It can be equipped with DA30-L, DA20, or R3000 analyser.

Specifications

Experimental resolution

< 5 meV (*)

Source resolution

< 3 meV at 200 pA

Kinetic energy range

3 - 150 eV

Spot size

0.04 x 1 mm2

For full specifications and more information about product options, please do not hesitate to contact your local sales representative.

Working distance

54 mm

Mounting flange

NW 100 CF

Bake-out temperature

< 130 °C

(*) Experimental energy resolution of the MCES150 source and analyser with 3.3 meV resolution. An overall resolution of 3.9 meV is achievable [Ibach et al, Review of Scientific Instruments, 88(2017)033903].

Downloads

HREELS: Measuring Phonon Dispersion

1.31 MB

MCES150 is a highly collimated and monochromatic electron source with an extremely narrow energy distribution. The combination of this source with Scienta Omicron high resolution ARPES analysers creates a platform for vibrational spectroscopy and phonon dispersion measurements. Using the 2D detector system of the analyser enables massive parallelisation and reduces the measurement time by orders of magnitude compared to the traditional approach.