TY - JOUR
T1 - [Formula Presented] nucleus reaction and total cross sections
T2 - New analysis of transmission experiments
AU - Friedman, E.
AU - Gal, A.
AU - Weiss, R.
AU - Aclander, J.
AU - Alster, J.
AU - Mardor, I.
AU - Mardor, Y.
AU - May-Tal Beck, S.
AU - Piasetzky, E.
AU - Yavin, A. I.
AU - Bart, S.
AU - Chrien, R. E.
AU - Pile, P. H.
AU - Sawafta, R.
AU - Sutter, R. J.
AU - Barakat, M.
AU - Johnston, K.
AU - Krauss, R. A.
AU - Seyfarth, H.
AU - Stearns, R. L.
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0031525672&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.55.1304
DO - 10.1103/PhysRevC.55.1304
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AN - SCOPUS:0031525672
SN - 0556-2813
VL - 55
SP - 1304
EP - 1311
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 3
ER -