单词 | ion microprobe mass spectrometer |
释义 | ion microprobe mass spectrometer [`ī´än `mī·krǝ´prōb ¦mas spek`träm·ǝd·ǝr] ENGINEERING A type of secondary ion mass spectrometer in which primary ions are focused on a spot 1-2 micrometers in diameter, mass-charge separation of secondary ions is carried out by a double focusing mass spectrometer or spectrograph, and a magnified image of elemental or isotopic distributions on the sample surface is produced using synchronous scanning of the primary ion beam and an oscilloscope. |
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