beam current 
The influence of proton irradiation (energy, 18 MeV; beam current, 300 nA) with doses of 5 × 1014, 1015, and 5 × 1015 cm2 on samples of SiO2BaObased glass coatings is investigated.


It was shown that significant steadystate currents (1 to 10% of the electron beam current) were observed only if the thickness of blocking (unirradiated) layer did not exceed 5 μm.


It was found that depending on deposition conditions, the resistivity ρ of applied lines varied from 4 × 102 to 103 Ω cm, decreasing rapidly with an increase in the electron beam current.


The Simulation of a BeamPlasma Discharge with the Beam Current Exceeding the Limiting Vacuum Current


Results are given of simulation of the spacetime dynamics of a beamplasma discharge with the beam current exceeding the limiting vacuum current.


A decreased angular divergence or increased ultimate ionbeam current density is achieved by a change in the potential drop in the space charge sheath between the plasma and the ion optics.


The source generates broad (50 cm2) slightly diverging (ω/2～3°5°) ion beams with energies of 3001000 eV at a beam current density of ～0.5 mA/cm2.


The use of a lowimpedance vacuum diode at an amplitude of the arriving pulse of 300400 kV made it possible to significantly increase the beam current (up to ～15 kA) and the corresponding Xradiation intensity.


The electronaccelerating voltage, beam current, vacuumdiode impedance, and other parameters are determined after the recovery procedure.


The restrictions on the mean clusterbeam current due to clustercluster collisions during acceleration in a linear accelerator are considered.


A compact nanosecond electron accelerator with an output energy of up to 4000 keV, a pulsed power of 100180 MW, a beam current of 0.251.1 kA, and a pulse energy of 57 J is described.


A 1.2MeV TwoSection Continuous Wave Linear Electron Accelerator with 50mA Average Beam Current


A 1.2MeV compact twosection continuous wave linear electron accelerator with an average beam current of 50 mA and beam power of 60 kW is described.


A ContinuousWave Linear Accelerator with an Output Electron Energy of 600 keV (Average Beam Current of 50 mA)


We describe a compact continuouswave linear accelerator for industrial applications with an output electron energy of 600 keV, average beam current of 50 mA, and average beam power of 30 kW.


It is determined that the minimum value of the beam current at which it is still possible to measure its profile is 3 nA.


The maximum electronbeam current is 1 A, and the energy is 26 keV.


The system incorporates commercial multichannel devices for the analog input/output and specialpurpose modules of pulsed monitors of the electronbeam current.


Its design makes it possible to simultaneously measure the radiation energy and monitor the beam current.


The source ensures an argon ion beam current of up to 80 mA at a discharge current and voltage of 1 A and 115 V, respectively, and a pressure of 1.5 × 102 Pa in the chamber.

