A diode for accelerating hydrogen nuclides with electron conductivity suppressed by an internal ring magnet

Small-size high-current ion diode with pulsed magnetic insulation of electrons for 500 keV energy

“…In this case, the critical magnetic field induction in the cathode region of accelerating gap is in the range from 0.2 to 0.6 T for the cathode diameters of 5−10 cm and accelerating voltages of U = 100-500 kV. The experiments show that the electron conduction suppression by the permanent magnet field [1] suffers from grave shortcommings, which occur due to the complex configuration and nonuniformity of the permanent magnet field. This results in the impossibility of axial magnetic field creation with the induction of no less than 0.4 T in the entire space between the cathode and laser plasma front (i.e., plasma anode), which is required for the complete suppression of electron diode conduction at the laser energy of W > 0.1 J.…”

“…The electron conduction suppression by the permanent magnet field with the azimuthal symmetry was investigated in [1,3]. The applications of pulsed magnetic field of spiral line with a current inside the cathode were investigated in [3,8].…”

“…The diode accelerates the deuterons arising from an anode target in the direction of the cathode target which is a source on neutrons. In these experiments, the application of a pulsed Nd:YAG laser (neodymium-doped yttrium aluminum garnet), wavelength of λ = 1.06 µm, radiation energy up to W ∼ 0.1 J, duration of ∼10 ns) and a pulsed high-voltage source with an accelerating voltage of U acc ∼ 300 kV, which is made via the Arkadyev-Marx scheme, allowed to produce accelerated deuteron flows with a current of up to 100−150 A [1].…”