NanoclusterTrap

NanoclusterTrap

Cryogenic linear quadrupole ion trap with 5 T superconductiong solenoid for x-ray magnetic linear dichroism spectroscopy of size-selected clusters, molecular ions, and complexes. Magnetron gas agregation is the standard ion source, but other ion sources can be added as well. Because of its complexity, this experiment requires thorough consultation with the scientist in charge. Please contact us well ahead of time to discuss experimental feasibility.

Experimental capabilities:

  • metal ion source (single/dual target magnetron sputtering and gas aggregation with additional reactive gas port)
  • hexapole collision/reaction cell for preparation of ionic complexes and oxides
  • quadrupole mass filter for monodisperse ion beam
  • cryogenic ion trap (liquid-helium-cooled) with ion temperatures down to 7.4 K
  • buffer gas cooling for Zeeman relaxation
  • applied magnetic field (0 - 5 T) coaxial with ion trap
  • reflectron time-of-flight mass spectrometer for ion yield detection of x-ray absorption and XMCD

Further ion sources (e.g. electrospray ionization) can be made available upon request.

See here for details of beamline UE52-PGM.

schematic view of the experimental setup

schematic view of the experimental setup

view of the experimental setup installed at UE52-PGM

view of the experimental setup installed at UE52-PGM

List of publications
Station data
Monochromator
Experiment in vacuum yes
Temperature range 3 - 300 K
Detector high transmission reflectron time-of-flight mass spectrometer for ion yield spectroscpy
Manipulators cryogenic linear quadrupole ion trap
applied magnetic field 0 - 5 T
mass range 19.5 mm/440 kHz Extrel quadrupole mass filter: 10 - 4000 amu
ion source magnetron sputtering/gas aggregation ion source (variable; dual target; reactive gas port)
sample preparation hexapole collision cell with reactive gas port

Methods

XMCD, NEXAFS

Nanocluster trap is jointly operated by Helmholtz-Zentrum Berlin, Uni Freiburg, TU Berlin, Kyushu University, and Toyota Technological Institute.

Nanocluster Trap is partially funded by the German Federal Ministry for Education and Research (BMBF) under Grant No. BMBF-05K13VF2.