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Study of Proton Induced Reactions in a Radioactive 129-I Target at Ep=660 MeV

V. S. Pronskikh·J. Adam·A. R. Balabekyan·V. S. Barashenkov·V. P. Dzhelepov·S. A. Gustov·V. P. Filinova·V. G. Kalinnikov·M. I. Krivopustov·I. V. Mirokhin·A. A. Solnyshkin·V. I. Stegailov·V. M. Tsoupko-Sitnikov·J. Mrazek·R. Brandt·W. Westmeier·R. Odoj·S. G. Mashnik·A. J. Sierk·R. E. Prael·K. K. Gudima·M. I. Baznat
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Abstract

Two NaI (85% 129-I and 15% 127-I) targets were exposed to a beam of 660-MeV protons. Cross sections for formation of 76 residual nuclei were obtained by the induced activity method. The results are compared with other experimental data on 127-I and theoretical calculations by eleven models contained in the codes LAHET3 (using the Bertini+Dresner, ISABEL+Dresner, INCL+Dresner, and INCL+ABLA options), CASCADE, CEM95, CEM2K, LAQGSM+GEM2, CEM2k+GEM2, LAQGSM+GEMINI, and CEM2k+GEMINI. Most of the models describe spallation products with masses close to the target reasonably well while the reliability of the codes differs greatly in the deep spallation and fission/fragmentation regions. The difficulties in describing products with A=40-80 by all of the codes tested here except for CEM2k+GEMINI and LAQGSM+GEMINI is related to the neglect of fission (and fragmentation) processes for targets as light as 129-I.

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V. S. Pronskikh, J. Adam, A. R. Balabekyan, V. S. Barashenkov, V. P. Dzhelepov, S. A. Gustov, V. P. Filinova, V. G. Kalinnikov, M. I. Krivopustov, I. V. Mirokhin, A. A. Solnyshkin, V. I. Stegailov, V. M. Tsoupko-Sitnikov, J. Mrazek, R. Brandt, W. Westmeier, R. Odoj, S. G. Mashnik, A. J. Sierk, R. E. Prael, K. K. Gudima, M. I. Baznat. 2004-03-30. Study of Proton Induced Reactions in a Radioactive 129-I Target at Ep=660 MeV. https://arxiv.org/abs/nucl-ex/0403056

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