## Abstract

Quasielastic (p, n) reactions were studied at an incident proton energy of 35 MeV. Differential cross sections for isobaric analog ΔJπ=0^{+} (Fermi-type) transitions and their angular distributions were measured in 27 N > Z target nuclei ^{7}Li, ^{9}Be, ^{13,14}C, ^{15}N, ^{50}Cr, ^{54,56}Fe, ^{58,60,62,64}Ni, ^{70}Zn, ^{71}Ga, ^{92}Zr, ^{110,112,114,115}Cd, ^{116,118,120}Sn, ^{140}Ce, ^{172,174,176}Yb, and ^{208}Pb. Pure ΔJπ=0^{+} Fermi-type transitions were observed in 23 of them. As for the four light odd-A nuclei, contributions from mixed ΔJπ≠0^{+} components were evaluated by microscopic distorted-wave Born approximation (DWBA) calculations to subtract them from the raw data and extract pure Fermi-type transition strengths. Thus 27 ΔJπ=0^{+} angular distributions were obtained, and fitted by macroscopic DWBA calculations with the Lane-model optical potential to derive systematically the isovector part of the potential. The best-fit parameters for each target are presented. The present results combined with our previous analysis on 13 other nuclei in the 17≤A≤48 region cover almost the entire mass region. They were used to obtain A-dependent global parameters by least-squares fit.

Original language | English |
---|---|

Article number | 044609 |

Pages (from-to) | 446091-446095 |

Number of pages | 5 |

Journal | Physical Review C - Nuclear Physics |

Volume | 62 |

Issue number | 4 |

Publication status | Published - 2000 Oct |

## ASJC Scopus subject areas

- Nuclear and High Energy Physics