[Formula Presented] nucleus reaction and total cross sections: New analysis of transmission experiments

E. Friedman, A. Gal, R. Weiss, J. Aclander, J. Alster, I. Mardor, Y. Mardor, S. May-Tal Beck, E. Piasetzky, A. I. Yavin, S. Bart, R. E. Chrien, P. H. Pile, R. Sawafta, R. J. Sutter, M. Barakat, K. Johnston, R. A. Krauss, H. Seyfarth, R. L. Stearns

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Abstract

The attenuation cross sections measured in transmission experiments at the alternating-gradient synchrotron for [Formula Presented] on [Formula Presented], C, Si, and Ca at [Formula Presented] = 488, 531, 656, and 714 MeV/[Formula Presented] are reanalyzed in order to derive total [Formula Presented] and reaction [Formula Presented] cross sections. The effect of plural (Molière) scattering is properly accounted for, leading to revised values of [Formula Presented] We demonstrate the model dependence of these values, primarily due to the choice of [Formula Presented] nuclear optical potential used to generate the necessary Coulomb-nuclear and nuclear elastic corrections. Values of [Formula Presented] are also derived, for the first time, from the same data and exhibit a remarkable degree of model independence. The derived values of [Formula Presented] and [Formula Presented] exceed those calculated by the first-order [Formula Presented] optical potential for C, Si, and Ca, but not for [Formula Presented], particularly at 656 and 714 MeV/[Formula Presented] where the excess is 10–25%. Relative to [Formula Presented], this excess is found to be nearly energy independent and its magnitude of 15–25% is not reproduced by any nuclear medium effect studied so far.

Original languageEnglish
Pages (from-to)1304-1311
Number of pages8
JournalPhysical Review C - Nuclear Physics
Volume55
Issue number3
DOIs
StatePublished - 1997

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