An ИЛТИ transportable high-power pulse X-ray radiation source

Characteristics of the ИЛТИ pulse (∼50 ns) X-ray radiation generator with a boundary quantum energy of ∼700 keV and a dose of ∼1 R at 1 m from the target are presented. The ИЛТИ is intended for prompt checking of the response of the studied object at its location to the radiation effect at specified time moments at an ambient temperature from +40 to −10°C and also for the x-ray radiographic monitoring (diameter of the beam focus is ∼5 mm) of positions of an object’s parts behind an opaque shield. The jitter in delays of the source’s response times with respect to the start pulse is < ±30 ns. The ИЛТИ is based on an electron-beam accelerator with a pulse current of ∼80 kA. A double forming line (DFL) with glycerin insulation serves as the energy storage and former of accelerating-voltage pulses. The DFL is charged from a six-stage Marx generator for 280 ns. The charging current of the DFL internal line passes through the resistance of the prepulse plasma formed in the volume of a strong-current electron diode between its specially shaped electrodes. In order to ensure ≥20 serial startups of the ИЛТИ without replacing anode and cathode parts, a backward diode with a massive anode and electron-beam pinching in the interelectrode gap was used. X rays are extracted into the air through a polyethylene window withstanding ≥200 source startups. The ИЛТИ has a modular demountable structure and, hence, can be quickly dismantled and moved to a new place. The ИЛТИ can be put into operation within ∼2 h. Two ИЛТИs used for radiation studies since 1998 have demonstrated performance stability and ease of service.