New source of MeV negative ion and neutral atom beams

S. Ter-Avetisyan*, J. Braenzel, M. Schnürer, R. Prasad, M. Borghesi, S. Jequier, V. Tikhonchuk

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)
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The scenario of "electron-capture and -loss" was recently proposed for the formation of negative ion and neutral atom beams with MeV kinetic energies. However, it does not explain why the formation of negative ions in a liquid spray is much more efficient than with an isolated atom. The role of atomic excited states in the charge-exchange processes is considered, and it is shown that it cannot account for the observed phenomena. The processes are more complex than the single electron-capture and -loss approach. It is suggested that the shell effects in the electronic structure of the projectile ion and/or target atoms may influence the capture/loss probabilities.

Original languageEnglish
Article number02B134
Number of pages3
JournalReview of Scientific Instruments
Issue number2
Early online date16 Nov 2015
Publication statusPublished - 2016

Bibliographical note

Contributed paper, published as part of the Proceedings of the 16th International Conference on Ion Sources, New York, New York, USA, August 2015.

ASJC Scopus subject areas

  • Instrumentation

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    Ter-Avetisyan, S., Braenzel, J., Schnürer, M., Prasad, R., Borghesi, M., Jequier, S., & Tikhonchuk, V. (2016). New source of MeV negative ion and neutral atom beams. Review of Scientific Instruments, 87(2), [02B134].