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Chinese Physics C> 1993, Vol. 17> Issue(4) : 372-378 

Analyses of Relativistic Optical Potential for Medium Energy Proton

  •  Institute of Atomic Energy,Beijing 102413

  • The influence of the parameters of the relativistic optical potential on the nucleon scattering properties,such as cross sections,angular distributions and spin observables etc.,is studied based on a set of global Dirac phenomenological optical potentials.It is shown that,in contrast with the case at low energies.the total scattering cross sections vary slowly as the energy and weakly depend on the potentials at Ep<200MeV.The differential cross sections and spin observables depend not only on the volume integrals of the optical potentials,but also on their strengths and shapes.The applicability of the relativistic microscopic optical potentia based on Walecka model in the medium energy region is also discussed in this paper.
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    [1] J.A. MeNeil, J. Shepard and S. J. walace, Phys. Rev. Lett., 50(1983), 1439; J. Shepard, J. A. Me-Neil and S. J.Walace, Phyt. Rev. Lett., 50(1983), 1443[2]B. C. Clark, S. Ha:na and R. T,. Mercer, in Proceedings of the Workshop on the Interaction Between Me-dium Enerev Nucleons in Nuclei (Indiana University G}clotron Facility. Bloomineton, Indianal.AIP.Conf. Proc. No. 97, edited by H. O. Meyer (AIP, New York, 1982), P. 260[3]B. D. Serot and J. D. Walecks, Adv. in Nucl. Phys., 16(1985). 1, ed. J. W. Neaeleand E. Vofgt(Plenum).[4]R. Brockmann and R. Machleidt, Phys.Lett 1ess, 149B(1984), 283; M. R. Anastasio L. S Celenza, W.S Pong and C. M. Shakin, Phys. Rev., 100(1983), 327[5]Ma Zhoneyu, Zhu Ping. Gu Yineoi and Zhuo Yizhone, Nucl. Phys., A490(1988), 619[6]C. Nuoaenau, A. D. MacKellar and Y. J. Lee, Nucl. Phys. A511(1990). 525.[7]A. D. MacKellar and B. Q. Chen, Proceeding of the Jnternational Workshop 0n Quark-Gluon Structure of Hadrons and Nuclei, May 28-Jun. 1990. Shanghai,China.P. 268.[8]S. Hama, B. C. Clark, E. D. Cooper, H. S. Sherif and R. L. Mercer, Phvs. Rev. C41(1990), 2737.[9]C. M. Ko, Q. Li and R. Wane. Phys. Rev. Lett, 59(1987). 1084.[10] H. Sakaguchi et al., J. Phys. Soc. Jpn. Suppl., 55(1986), 61, and private communication.[11]R. W. Fergerson, et al., Phys. Rev., C33(1986) 239.

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FENG Da-Chun, LIU Wen-Qin and MA Zhong-Yu. Analyses of Relativistic Optical Potential for Medium Energy Proton[J]. Chinese Physics C, 1993, 17(4): 372-378.
FENG Da-Chun, LIU Wen-Qin and MA Zhong-Yu. Analyses of Relativistic Optical Potential for Medium Energy Proton[J]. Chinese Physics C, 1993, 17(4): 372-378. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Analyses of Relativistic Optical Potential for Medium Energy Proton

    Corresponding author: FENG Da-Chun,
  • Institute of Atomic Energy,Beijing 102413
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1993-04-05

Abstract: The influence of the parameters of the relativistic optical potential on the nucleon scattering properties,such as cross sections,angular distributions and spin observables etc.,is studied based on a set of global Dirac phenomenological optical potentials.It is shown that,in contrast with the case at low energies.the total scattering cross sections vary slowly as the energy and weakly depend on the potentials at Ep<200MeV.The differential cross sections and spin observables depend not only on the volume integrals of the optical potentials,but also on their strengths and shapes.The applicability of the relativistic microscopic optical potentia based on Walecka model in the medium energy region is also discussed in this paper.

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