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Have positron-helium scattering resonances been observed?

  • Topical issue: Electron-driven molecular processes
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The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics Aims and scope Submit manuscript

The Original Article was published on 17 August 2005

Abstract.

We comment on the recent claim by Karwasz [Eur. Phys. J. D 35, 267 (2005)] that he observed resonant structures in the total cross-section for positron scattering from helium. We frame our observations in terms of both the general capabilities of the Trento spectrometer, and new checks we have made on the measurement procedure employed by Karwasz. We conclude that the observed structures are most likely an experimental artefact, rather than being due to the positron-helium interaction.

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References

  • C.M. Surko, G.F. Grebakin, S.J. Buckman, J. Phys. B 38, R57 (2005)

  • G.P. Karwasz, Eur. Phys. J. D 35, 267 (2005)

    Article  ADS  Google Scholar 

  • A.P. Mills Jr, in: Atomic, Molecular and Optical Physics: Charged Particles edited by F.B. Dunning, R.G. Hulet (Academic Press, 1995)

  • A. Zecca, C. Perazzolli, M.J. Brunger, J. Phys. B 38, 2079 (2005)

    Article  ADS  Google Scholar 

  • G. Amarenda, K.F. Canter, D.C. Schoepf, J. Appl. Phys. 80, 4660 (1996)

    Article  ADS  Google Scholar 

  • G.J. Schulz, Phys. Rev. Lett. 10, 104 (1963)

    Article  ADS  Google Scholar 

  • T.S. Stein, W.E. Kauppila, V. Pol, J.H. Smart, G. Jesion, Phys. Rev. A 17, 1600 (1978)

    Article  ADS  Google Scholar 

  • M. Kimura, O. Sueoka, A. Hamada, Y. Itikawa, Adv. Chem. Phys. III, 537 (2000)

  • T. Mizogawa, Y. Nakayama, T. Kawaratani, M. Tosaki, Phys. Rev. A 31, 2171 (1985)

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Department of Physics, University of Trento, Hydrogen, Environment and Energy Laboratory, 38050, Povo (TN), Italy

    Antonio Zecca

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  1. Antonio Zecca
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Additional information

http://dx.doi.org/10.1140/epjd/e2005-00225-3

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Zecca, A. Have positron-helium scattering resonances been observed?. Eur. Phys. J. D 37, 151–152 (2006). https://doi.org/10.1140/epjd/e2005-00322-3

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  • DOI: https://doi.org/10.1140/epjd/e2005-00322-3

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