METHOD OF CONTROLLING LASER ION SOURCE Russian patent published in 2024 - IPC H01J3/04 

FIELD: plasma physics.

SUBSTANCE: invention relates to a method of controlling a laser ion source. Method includes focusing radiation of a pulsed laser on a solid target, formation of laser plasma, direction of plasma flow into vacuum cylindrical flight channel with inner diameter d, which is under voltage U, contraction of the ion flow of the laser plasma in the vacuum cylindrical flight channel with a longitudinal, constant magnetic field created by a constant solenoid covering the vacuum cylindrical flight channel, extraction of ions from vacuum cylindrical flight channel by electric field. Laser plasma is additionally exposed to a correcting magnetic field with induction B, localized in the area between the laser target and the vacuum cylindrical flight channel and created by the pulse solenoid, varying the induction of this magnetic field B within the possible limits determined by the condition where A is the atomic mass of the ion, Z is its charge, voltage U on the vacuum cylindrical flight channel is varied, thus achieving maximum value of current of ions with the specified charge Z, extracted from the vacuum cylindrical flight channel.

EFFECT: significant increase at the outlet of the vacuum transit channel of the flow of ions only with a given ratio Z/A relative to the total number of ions of the laser plasma scattering in the vacuum transit channel.

1 cl, 1 dwg