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"Spurious Ionic Charge States in a Tandem Accelerator"
J.O. Fernández Niello, A. Arazi, O.A. Capurro, D. Abriola, A.M.J. Ferrero, L. Gladkis, R.G. Liberman, G.V. Martí, A.J. Pacheco, M. Ramírez and J.E. Testoni
Proc. of the "9th International Conference on Accelerator Mass Spectrometry", Nagoya, Japan, September 9-13, 2002. Ed. T. Nakamura, K. Kobayashi, H. Matsuzaki, M. Murayama, Y. Nagashima, H. Oda, Y. Shibata, Y. Tanaka and M. Furukawa
Nucl. Instrum. Meth. B 223-224 (2004) 242-246
Spurious projectiles appearing in a tandem accelerator when tuning highly ionized 35Cl were quantitatively analyzed in an attempt to understand their origin. Most of these ions can be explained in terms of multiple electron-capture and electron-loss reactions of the accelerating particle in the high-energy section of the accelerator. The fair agreement between the experimental yields of different spurious beams and the predictions of a theoretical model lends support to the hypothesis that such atomic collisions take place with molecules from the residual gas in the accelerator.
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