Before entering a mass spectrometer, a beam of singly charged ions are filtered by a velocity selector with crossed electric and magnetic fields of E=69 V/m and B=95 mT, respectively, such that v, E and B are mutually perpendicular to one another. The ions entering the slit are forced to move in a semi-circular path due to the presence of a uniform magnetic field Bo=40 T perpendicular to the plane of the ion trajectory, and produce a spot a distance D=50 cm from the entrance slit, on a sensitive plate. Calculate the mass (in au, atomic unit) of an ion in the beam. Electronic charge -19 e=1.6x10 C, 1 au=1.67x1027 kg.

Before entering a mass spectrometer, a beam of singly charged ions are filtered by a velocity selector with crossed electric and magnetic fields of E=69 V/m and B=95 mT, respectively, such that v, E and B are mutually perpendicular to one another. The ions entering the slit are forced to move in a semi-circular path due to the presence of a uniform magnetic field Bo=40 T perpendicular to the plane of the ion trajectory, and produce a spot a distance D=50 cm from the entrance slit, on a sensitive plate. Calculate the mass (in au, atomic unit) of an ion in the beam. Electronic charge -19 e=1.6x10 C, 1 au=1.67x1027 kg.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 28P: An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's...

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