Before entering a mass spectrometer, a beam of singly charged ions are filtered by a velocity...
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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=374 V/m and B=4 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=0.14 T perpendicular to the plane of the ion trajectory, and produce a spot a distance D=22 cm from the entrance slit, on a sensitive plate. Calculate the mass (in au, atomic unit) of an ion in the beam. Electronic charge e=1.6×10-19 C, 1 au=1.67×10-27 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=374 V/m and B=4 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=0.14 T perpendicular to the plane of the ion trajectory, and produce a spot a distance D=22 cm from the entrance slit, on a sensitive plate. Calculate the mass (in au, atomic unit) of an ion in the beam. Electronic charge e=1.6×10-19 C, 1 au=1.67×10-27 kg.
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Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
Posted Date:
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