The behavior of the complex phase shifts over the 5.3- and 9.14-Mev. Anomalies in C__(p,p)C__

[摘要] The elastic scattering of protons from carbon in the range of incident energies from 5.0 to 6.0 MeV. and 9.0 to 9-3 MeV. has been investigated using the Rice University tandem Van de Graaff accelerator and a differentially pumped gas scattering chamber (a). Absolute differential cross sections for the elastic scattering of protons from carbon were measured at laboratory angles of 85.22°, 121.16°, and 159.45° as a function of energy. Also measured were absolute differential cross sections as a function of angle at incident proton energies Ep = 5.18, 5.23, 5.28, 5.33, 5-35, 5-36, 5-37, 5.38, 5.43, 5.48, 5.87, 9.09, 9.10, 9.13, 9.19, 9.22, and 9.26 MeV. Complex phase shifts are obtained to represent the data. It is shown that in the case of the d 3/2 resonance at 5.3 MeV. and the f 5/2, resonance 9.14 MeV. the ;;resonating;; complex phase shift does not pass through 90°.

[发布机构] Rice University