Gas-mixing: Ion Cooling or Reduced Turbulent Heating?

A.G.Drentje

Chinese Physics C> 2007, Vol. 31> Issue(S1) : 162-164

Gas-mixing: Ion Cooling or Reduced Turbulent Heating?

A.G.Drentje ^,

National Institute of Radiological Sciences, Chiba 263-8555, Japan

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Abstract：
The question posed in the title concerns the explanation of a well-practised technique in ECR ion sources for increasing the output of the highest charge states of the ions of interest. For a long time the most accepted model was that of ion cooling, being a `single-particle' effect. Two recent papers, likely inspired on earlier work, are proposing a ‘collective’ effect due to non-linear plasma-wave interaction, giving rise to turbulent heating. The mixing gas will in that picture reduce the heating. A few experiments are suggested to help unravel the problem of stating which effect is dominating.

References

[1]

. Elizarov L I et al. Rev. Sci. Instr., 2006, 77: 03A3272. Ivanow A, Wiesemann K. IEEE Transact. Plasma Sci.,2005, 33: 17433. Private Communication with A. A. Ivanov and K. Wiesemann, Februari 20064. Drentje A G. Rev. Sci. Instrum., 2003, 74: 26315. Melin G et al. J. Appl. Phys., 1999, 86: 47726. Kawai Y et al. Plasma Sources Sci. Techn., 2001, 10: 4517. Becker R. Rev. Sci. Instrum., 2002, 73: 6938. Drentje G. Rev. Sci. Instrum., 1992, 63: 28759. Drentje G et al. Rev. Sci. Instrum., 1996, 67: 95310. Tarvainen et al. Rev. Sci. Instr., 2006, 77: 03A309

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A.G.Drentje. Gas-mixing: Ion Cooling or Reduced Turbulent Heating?[J]. Chinese Physics C, 2007, 31(S1): 162-164.

A.G.Drentje. Gas-mixing: Ion Cooling or Reduced Turbulent Heating?[J]. Chinese Physics C, 2007, 31(S1): 162-164. shu

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Received: 2007-05-30
Revised: 1900-01-01

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