What is the difference between Aston's mass spectrometer and Dumpsters mass spectrometer?

Answer 1

Aston got photos on the plate. Dempster's plate was connected with electrometer and he meashured the ion current die to V (voltage the ion had passed)

Answer 2

Aston's mass spectrometer was developed by Francis William Aston in 1919 and used a magnetic field to separate ions based on their mass-to-charge ratio, providing a more accurate measurement of atomic weights. On the other hand, "Dumpster's mass spectrometer" does not refer to a specific instrument or technique in the field of mass spectrometry; it seems to be a typographical error or confusion.