Page 110 - Tandem Techniques
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Page 91
(R1). The centrifugal force and the electrostatic force can be equated algebraically, to determine the
conditions under which an ion will enter the magnetic sector slit.
Figure 2.29
The Double Focusing Sector Mass Spectrometer. Thus
where (e) is the charge on the electron.
Thus solving for (v)
Now having entered the magnetic sector the only ions that reach the detector at radius (R2) will be
those where the centrifugal force will equal the deflecting force from the magnetic field.
Thus bearing in mind that an electron of charge (e) traveling at a velocity (v) constitutes a current of
(ev) then,
