Question: 4. A beam of singly ionized lithium atoms, after being accelerated through a potential difference of 2000 volts, enters a uniform magnetic field of

4. A beam of singly ionized lithium atoms, after being accelerated through

a potential difference of 2000 volts, enters a uniform magnetic field of

4. A beam of singly ionized lithium atoms, after being accelerated through a potential difference of 2000 volts, enters a uniform magnetic field of 0.3 weber/m? perpendicular to the beam. The lithium ions then impinge on a photographic plate (Fig. 5.3b). What will be the absolute separation of Li+ and Li7+ ions on the photographic plate? Singly charged positive ions (a 60? 10- 20 enmu) of n certoin mot To pump E S2 FIG. 5.3 (b) The dispersion and focusing of a beam of ions. |

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