Laser-Ablation Split-Stream

This unique four-ICP/dual-laser 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

• Nu Instruments AttoM high-resolution single-collector inductively coupled plasma mass spectrometer

• Agilent 7700x quadrupole inductively coupled plasma mass spectrometer

• Cetac / Photon Machines 193 nm excimer G1 laser with HelEx cell

• 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