Analytical laser ablation of solid samples for ICP, ICP-MS, and FAG-MS analysis

摘要

This invention is improved laser ablation of solid samples analyzed by inductively coupled plasma (ICP), ICP mass spectrometry, or flowing afterglow mass spectrometry. A mirror-with-hole eliminates chromatic aberration in sample viewing and allows rad-hardening for radiation hot cell analysis of nuclear waste. Other attributes facilitate comprehensively rad-hardened laser ablation. Additional improvements include large, homogeneous laser spots, long-focus objective lenses, variable laser path length with built-in re-alignment, variable demagnification ratio, higher powered SMR lasers with larger spots enabling sensitive bulk solids analysis, demountable gravitationally self sealing stack assembly sample ablation cells, and laser ablation sample changers.