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Chinese Physics C> 2000, Vol. 24> Issue(10) : 974-978 

Production of Metallic Ions Beam in ECR Ion Source

  •  Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

  • The production of metallic ion beam by means of many methods in high charge state ECR (Electron Cyclotron Resonance) ion source is reviewed. A small evaporation oven with external diameter 8 mm and length 70 mm was tested for metallic ion beam production. The small oven could reach more than 1300℃ with 110W electric power. 140eμA of Ca11+and 70eμA of Ca12+ beams were achieved on the 14.5 GHz ECR at 1MP ion source by using the oven. The Ca11+ beam had been provided to the IMP cyclotron for three weeks with a good stability. In order to obtain intense metallic ion beam, MIVOC (Metallic Ion from VOlatile Compound) method was tested successfully on the 14.5 GHz ECR ion source. 65eμA of Fe10+ by MIVOC method was obtained. During running of the ion source with Ca11+, the oven temperature was not controlled easily by changing the electric power because of extra heating by microwave which was already tested. So a new type of oven was designed in order to avoid this problem. MIVOC method is easy to be performed and beam intensity is high, but it is only suitable for a few metallic elements, on the other hand, the vacuum chamber of the ion source could be seriously contaminated if the ion source runs for a long time.
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    [1] ZHANG ZiMin. Master Thesis, IMP. (in China), 1999, 51(张子民.硕士论文，中国科学院近代物理研究所,1999, 51)2 LHAO HongWei et al. High Energy Phys. and Nucl. Phys. (in Chinese)，1999, 23(7):717(赵红卫等.高能物理与核物理,1999,23(7):717)3 ZHANG HuaShun. Ion Source and High Power Neutralized Beam Source. Beijing: .Atcxnic Energy Press (in China)，1987, 169-717(张华顺.离子源和大功率中性束源，北京:原子能出版社，1987,169-171)4 Dushrnan S. Scientific Fcwndation of Vacuum Technique, New York John WileySONS. Inc. and London Chapman HALL Limited, 1949, 1275 Bogomolov S L, Efremov A, Kumer V B et al. Production of Ions of Metals with an ECR Ion Source at FLNR(JINR)Cyclotrons, Ptnceedings of the 14th International Workshop on ECR Source, Geneva,Switzerland, 1999, 716 Gammino S, Celona L, Ciavola G et al. Installation of ECR2 at LNS and Preliminary Tests, Proceedings of the 14th In-ternational Workshop nn ECR source, Gencva Switzerland, 1999, 1397 Baruce C，Been T. Dupuis M et al. Metallic Ion Developments at GANIL, Proceedings of the 14th Interrutional Workshop on ECR Source. Geneva, Switzerland, 1999.111

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ZHANG ZiMin, ZHAO HongWei, ZHAO YuBin, ZHANG XueZhen, GUO XiaoHong and LIU ZhanWen. Production of Metallic Ions Beam in ECR Ion Source[J]. Chinese Physics C, 2000, 24(10): 974-978.
ZHANG ZiMin, ZHAO HongWei, ZHAO YuBin, ZHANG XueZhen, GUO XiaoHong and LIU ZhanWen. Production of Metallic Ions Beam in ECR Ion Source[J]. Chinese Physics C, 2000, 24(10): 974-978. shu
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Received: 1998-08-10
Revised: 1900-01-01
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Production of Metallic Ions Beam in ECR Ion Source

    Corresponding author: ZHANG ZiMin,
  • Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China
  • Received Date: 1998-08-10
  • Accepted Date: 1900-01-01
  • Available Online: 2000-10-05

Abstract: The production of metallic ion beam by means of many methods in high charge state ECR (Electron Cyclotron Resonance) ion source is reviewed. A small evaporation oven with external diameter 8 mm and length 70 mm was tested for metallic ion beam production. The small oven could reach more than 1300℃ with 110W electric power. 140eμA of Ca11+and 70eμA of Ca12+ beams were achieved on the 14.5 GHz ECR at 1MP ion source by using the oven. The Ca11+ beam had been provided to the IMP cyclotron for three weeks with a good stability. In order to obtain intense metallic ion beam, MIVOC (Metallic Ion from VOlatile Compound) method was tested successfully on the 14.5 GHz ECR ion source. 65eμA of Fe10+ by MIVOC method was obtained. During running of the ion source with Ca11+, the oven temperature was not controlled easily by changing the electric power because of extra heating by microwave which was already tested. So a new type of oven was designed in order to avoid this problem. MIVOC method is easy to be performed and beam intensity is high, but it is only suitable for a few metallic elements, on the other hand, the vacuum chamber of the ion source could be seriously contaminated if the ion source runs for a long time.

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