LASER SOURCE OF HIGHLY CHARGED IONS Russian patent published in 2009 - IPC H01J37/08 

FIELD: physics.

SUBSTANCE: invention relates to ion sources designed for charged particle accelerators. The laser source of highly-charged ions consists of a target, a laser, a passage channel which is made in form of a metal pipe, the central longitudinal axis of which coincides with the initial direction of hydrodynamic motion of the plasma stream from the target, on the surface of which magnets are placed such that they form inside the passage channel a multipolar magnetic field, the field lines of which are perpendicular to the longitudinal axis of the passage channel, and strength of this field when approaching zero at its central longitudinal axis, increases sharply in the region of the walls of the passage channel and the ion collection system which is on the central longitudinal axis at the end of the passage channel. Magnets are fitted in the zone between the beginning of the passage channel and points in which the laser plasma begins to touch walls of the passage channel such that, pairs of magnets on diametrically opposite lateral sides of the passage channel form a magnetic field whose filed lines are directed in opposite directions. Lateral dimensions of the target are less than lateral dimensions of the passage channel, where its region which is illuminated by the laser lies on the central longitudinal axis of the passage channel and is at a distance from its beginning.

EFFECT: increased current of highly charged ions in an ion beam generated by a laser ion source.

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