An instrument in which beams of ions are separated (analysed) according to the quotient
mass/charge, and in which the deflection and intensity of the beams are recorded directly
on photographic plate or
film.
Source:
PAC, 1991, 63, 1541
(Recommendations for nomenclature and symbolism for mass spectroscopy (including an
appendix of terms used in vacuum technology). (Recommendations 1991))
on page 1545