The invented Hall current ion source with a hybrid positioning of a central magnetic pole of a bout a half a distance between a gas distributing system and {HEAD ~ an external magnetic pole} and with a high positive gradient of {TAIL ~ magnetic field} helps to improve also electromagnetic focusing of plasma flow inside a discharge chamber from discharge chamber walls into a median part of a discharge chamber 
The invented Hall current ion source with a hybrid positioning of a central magnetic pole of a bout a half a distance between a gas distributing system and { HEAD ~ an external magnetic pole } and with a high positive gradient of { TAIL ~ magnetic field } helps to improve also electromagnetic focusing of plasma flow inside a discharge chamber from discharge chamber walls into a median part of a discharge chamber
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