LASER-PLASMA HIGH-CHARGE ION GENERATOR Russian patent published in 2015 - IPC H01J3/04 

FIELD: physics.

SUBSTANCE: invention relates to ion generators used in plasma engineering and charged particle accelerators. The laser-plasma high-charge ion generator consists of a laser, a tubular flight channel, a laser-irradiated target mounted inside the tubular flight channel at the side of one of its ends, a tubular metal shield placed coaxially inside the tubular flight channel between the target and points on the walls of said channel, wherein the laser plasma, during expansion, begins to touch its lateral walls, and an ion collection system mounted at the end of the tubular flight channel opposite the point at which the target is mounted. The target and the metal shield are electrically connected to each other and are electrically insulated from all other electrodes. Electrons from the laser plasma formed at the target cannot leave through the material of the target or surrounding electrodes. By remaining in said plasma, said electrons increase both the probability of ionisation of the substance of the target, thereby raising the charge-state of plasma ions, and prevent the increase in the value of the positive electric potential of the laser plasma itself relative to the surrounding electrodes, which reduces emission of ions from said plasma.

EFFECT: high current of high-charge-state ions in a beam at the output of a laser-plasma high-charge ion generator.

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