title: Emittance of short-pulsed high-current ion beams formed from the plasma of the electron cyclotron resonance discharge sustained by high-power millimeter-wave gyrotron radiation.
abstract: We present experimental results on measuring the emittance of short-pulsed (≤100 μs) high-current (80-100 mA) ion beams of heavy gases (Nitrogen, Argon) formed from a dense plasma of an ECR source of multiply charged ions (MCI) with quasi-gas-dynamic mode of plasma confinement in a magnetic trap of simple mirror configuration. The discharge was created by a high-power (90 kW) pulsed radiation of a 37.5-GHz gyrotron. The normalized emittance of generated ion beams of 100 mA current was (1.2-1.3) π mm mrad (70% of ions in the beams). Comparing these results with those obtained using a cusp magnetic trap, it was concluded that the structure of the trap magnetic field lines does not exert a decisive influence on the emittance of ion beams in the gas-dynamic ECR source of MCI.
authors.affiliation: Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanova st., 603950 Nizhny Novgorod, Russia.
authors.forename: S
authors.initials: S
authors.lastname: Razin
authors.affiliation: Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanova st., 603950 Nizhny Novgorod, Russia.
authors.forename: V
authors.initials: V
authors.lastname: Zorin
authors.affiliation: Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanova st., 603950 Nizhny Novgorod, Russia.
authors.forename: I
authors.initials: I
authors.lastname: Izotov
authors.affiliation: Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanova st., 603950 Nizhny Novgorod, Russia.
authors.forename: A
authors.initials: A
authors.lastname: Sidorov
authors.affiliation: Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanova st., 603950 Nizhny Novgorod, Russia.
authors.forename: V
authors.initials: V
authors.lastname: Skalyga