LAMMA 1000, a new instrument for bulk microprobe mass analysis by pulsed laser irradiation

摘要: Abstract A new laser microprobe mass analyser has been developed which allows spectrometry of bulk samples. The beam a Nd - YAG is focused through specially designed objective onto the surface at an angle 30° to normal. generated ions are extracted perpendicularly sample and imaged by ion lens down time-of-flight spectrometer SEM detector. instrument characterized spatial resolution analysis 1 μm, observation about 0.5 substance demand for in picogram range sensitivity % sub-ppm range. basis design features, first analytical results presented.