In the Bainbridge mass spectrometer (see Fig. 27.24), the magnetic-field magnitude in the velocity selector is 0.510 T, and ions having a speed of 1.82 x 106 m/s pass through undeflected.  (a) What is the electric-field magnitude in the velocity selector?  (b) If the separation of the plates is 5.20 mm, what is the potential difference between the plates?

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In the Bainbridge mass spectrometer (see Fig. 27.24), the magnetic-field magnitude in the velocity selector is 0.510 T, and ions having a speed of 1.82 x 106 m/s pass through undeflected. 

(a) What is the electric-field magnitude in the velocity selector? 

(b) If the separation of the plates is 5.20 mm, what is the potential difference between the plates?

27.24 Bainbridge's mass spectrometer
utilizes a velocity selector to produce
particles with uniform speed v. In the
region of magnetic field B', particles with
greater mass (m2 > m1) travel in paths
with larger radius (R2 > R1).
Velocity selector
selects particles
with speed v.
Particle
detector
R2
Magnetic field separates particles by mass;
the greater a particle's mass, the larger is
the radius of its path.
Transcribed Image Text:27.24 Bainbridge's mass spectrometer utilizes a velocity selector to produce particles with uniform speed v. In the region of magnetic field B', particles with greater mass (m2 > m1) travel in paths with larger radius (R2 > R1). Velocity selector selects particles with speed v. Particle detector R2 Magnetic field separates particles by mass; the greater a particle's mass, the larger is the radius of its path.
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