Pan Ning discharge,titanium pump

When the anode voltage is high, in order to avoid electronic fall to the anode, must add a strong axial magnetic field. In the axial direction, central section movement when the electronic anode cylinder, accelerated by the effect of electric field force, the electron velocity is larger and larger, across the central section, the electric force impede the electron do decelerated motion, close to the cathode plate Vz decay to zero, the electron acceleration by electric field force and the effect of re the reverse acceleration movement, and started to decelerate over center section, repeat the above exercise so don't stop.

  Electrons in the anode tube in after a long journey to fall on the anode. A large number of electronic magnetic field constraints to wheel line form close to the anode cylinder rotation, the formation of a layer of electron cloud. The rotation frequency rotating electron cloud is about 100MHz, the electron density of up to 1010 (A / cm 3) order. The phenomenon known as the Pan Ning discharge.