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結果 (英文) 2:

Neon atoms are excited by inelastic collision with electrons emitted by the cathode in a Frank-Hertz tube. The Cathode in the tube is heated by a filament to emit electrons in a process called theronic emission. After absorbing energy from collisions, electrons in Ne atoms are excited and subsequently de-excited to produce a visible glow in the gas that can be viewed directly. The energy level diagram for Ne is shown in Fig. 2. The most probable excitation through inelastic electron collision Place from the ground state to the ten takes, which are between 18.4 eV and 19.0 eV above the ground state. The four lower 3s-states in the range from 16.6 eV and 16.9 eV are excited with a lower probability. The de-excitation of the 3p states to the ground is only possible via the 3p-states. The 3p-3s Transition leads to emission of a photon. The light emitted in this process lies in the visible range between red and green, and can thus be observed with the naked eye. ...

結果 (英文) 3:

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