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Unformatted text preview: Mass Spectrometer
Purpose: measuring masses of ions. • Charged particle is accelerated by moving through potential difference |∆V |. • Trajectory is then bent into semicircle of radius r by magnetic ﬁeld B. 1 mv 2 = q|∆V |. 2 mv . • Radius of trajectory: r = qB • Kinetic energy: • Charge: q = e eB 2 r2 • Mass: m = . 2|∆V | tsl195 – p.1/1 ...
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