Laser-Ablation Split-Stream

This Plasma facility enables LASS (laser ablation split-stream) analysis: simultaneous geochronology and trace-element geochemistry with 10-50 micron spatial resolution. The LASS facility consists of

  • Nu Instruments Plasma 3D multi-collector ICP with sixteen Faraday cups, 5 low-mass Daly dectors, and one high-mass Daly detector
  • Nu Instruments Plasma HR-ES multi-collector ICP with twelve Faraday cups and four low-mass ion counters
  • Agilent 7700X/S quadrupole inductively coupled plasma mass spectrometer
  • Cetac / Photon Machines 193 nm excimer Analyte laser with HelEx cell


Associated Instrumentation

The LASS facility is supported by extensive associated Earth-Science instrumentation, including

  • Cameca SX-100 electron microprobe with 5 WDS detectors, an EDS detector, and a CL detector
  • FEI Quanta 400f field-emission, environmental scanning electron microscope with an EBSD detector, BSE detector, SE detector, EDS detector, and a CL detector
  • Thermo Fisher Triton thermal ionization mass spectrometer
  • Class 100 Clean Room suite
  • petrographic microscopes, cameras, and thin-section scanning equipment
  • rock crushing and mineral separation facilities