ПОСЛЕДОВАТЕЛЬНАЯ ИОНИЗАЦИЯ ПОЛОЖИТЕЛЬНЫХ ИОНОВ УГЛЕРОДА И АЗОТА ЭЛЕКТРОННЫМ УДАРОМ (С2+ → С3+ → С4+ → С5+ → С 6 + И N3+ → С4+ → N5+ → N6+ → N7+ )

摘要

Multicharged ion source CRION is a cryogenic version of the electron beam ion sour¬ce. Positive ions are trapped by electron beam space-charye fields resulting in elect-tron-ion collision sequences. With electric potential barriers to prevent ion escape alony the axis of the electron beam during an ionization process, high electron current density up to 30 A cm —2 and ionizing elec¬tron energy Ee in excess of 2 keV , the trap- piny time can be regulated up to 40 msec.