## Abstract

Elster and Weppner [Phys. Rev. C 57, 189 (1998)], conclude from comparisons of their results with proton elastic scattering data that an optical potential formed from a model based upon the impulse approximation to the scattering is inappropriate below 200 MeV. That is certainly the case with their model, however folded models using [Formula Presented] matrices have been shown to be appropriate. They claim that higher order terms in the spectator expansion are the required corrections and that a Faddeev calculation is needed. We show that the less than satisfactory comparisons of their calculated results with data are due to their use of free [Formula Presented] matrices as the transition operators. Comparison of predictions obtained from the (complex, nonlocal) optical model potentials we find by folding appropriate medium modified [Formula Presented] interactions with data from the scattering of 65 and 200 MeV protons from [Formula Presented] illustrate this.

Original language | English |
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Pages (from-to) | 1813-1815 |

Number of pages | 3 |

Journal | Physical Review C - Nuclear Physics |

Volume | 59 |

Issue number | 3 |

DOIs | |

Publication status | Published - 1999 |

Externally published | Yes |

## ASJC Scopus subject areas

- Nuclear and High Energy Physics