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Chinese Physics C> 2007, Vol. 31> Issue(S1) : 159-161 

Multiple Ionization of Metal Ions in SMIS 75

  •  Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia2 High Current Electronics Institute, Russian Academy of Sciences, Tomsk, Russia

  • A Simple Mirror Ion Source with 75GHz pumping (SMIS 75) has been created. The confinement system is a mirror trap with magnetic field in the plug up to 5T, variable length 15—20cm and mirror ratio 3—5. The plasma of metal ions is injected into the trap by a special vacuum arc minigun. Plasma heating is performed by the microwave radiation of a gyrotron (the frequency of 75GHz, power up to 200kW, pulse duration up to 150μs). The results of the experiment have demonstrated substantial multiple ionization of metal ions. For a metal with high melting temperature (Pt), heating shifts the average ion charge from Pt2+ up to Pt7+. Maximum stripped observed ion is Pt10+. Total current of ion beam is about 300mA.
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    [1] . Vodopyanov A V, Golubev S V, Razin S V et al. Multiple ionization of metal ions by ECR heating of electrons in vacuum arc plasmas // Review of Scienti c Instruments,2004, 75: 18882. Vodopyanov A V, Golubev S V, Mansfeld D A et al. Multiple ionization of metal ions by ECR heating of electrons in vacuum arc plasmas // Proceedings of 16th International Workshop on ECR Ion Sources, 2004. Berkley, USA p. 1163. Vodopyanov A V, Golubev S V, Mansfeld D A et al. Generation of multicharge ions of refractory metals in ECR discharge in a simple mirror trap. // Zh. Tekhn. Fiz., 2005,75(issue 9): 1014. Anders A, Yushkov G Yu. Ion flux from vacuum arc cathode spots in the absence and presence of a magnetic field// Journal of Applied Physics, 2002, 91(8): 4824-48325. Lotz W. Zeit. fur Phys., 1968, 216: 241

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A.V.Vodopyanov1, S.V.Golubev1, V.I.Khizhnyak1, D.A.Mansfeld1,
A.G.Nikolaev2, E.M.Oks2 and G.Yu.Yushkov2. Multiple Ionization of Metal Ions in SMIS 75[J]. Chinese Physics C, 2007, 31(S1): 159-161.
A.V.Vodopyanov1, S.V.Golubev1, V.I.Khizhnyak1, D.A.Mansfeld1,
A.G.Nikolaev2, E.M.Oks2 and G.Yu.Yushkov2. Multiple Ionization of Metal Ions in SMIS 75[J]. Chinese Physics C, 2007, 31(S1): 159-161. shu
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Received: 2007-05-30
Revised: 1900-01-01
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Multiple Ionization of Metal Ions in SMIS 75

  • Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia2 High Current Electronics Institute, Russian Academy of Sciences, Tomsk, Russia
  • Received Date: 2007-05-30
  • Accepted Date: 1900-01-01
  • Available Online: 2007-01-03

Abstract: A Simple Mirror Ion Source with 75GHz pumping (SMIS 75) has been created. The confinement system is a mirror trap with magnetic field in the plug up to 5T, variable length 15—20cm and mirror ratio 3—5. The plasma of metal ions is injected into the trap by a special vacuum arc minigun. Plasma heating is performed by the microwave radiation of a gyrotron (the frequency of 75GHz, power up to 200kW, pulse duration up to 150μs). The results of the experiment have demonstrated substantial multiple ionization of metal ions. For a metal with high melting temperature (Pt), heating shifts the average ion charge from Pt2+ up to Pt7+. Maximum stripped observed ion is Pt10+. Total current of ion beam is about 300mA.

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