mass spectrograph(redirected from mass spectrography)
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an instrument that subjects charged and accelerated ions (atomic or molecular) to a magnetic field that imparts a curved path that differs for each mass-to-charge ratio, thus separating individual species; used in detecting and assaying isotopic ratios and in molecular structure determinations.
A device that separates ions of different masses by employing a magnetic field to deflect them as they travel along a given path.
See also: spectrograph