### Abstract

Transverse-polarization-transfer coefficients D_{NN} for the (p, n) reaction at θ = 0° have been measured on ^{12}C, ^{13}C and ^{40}Ca targets at E_{p} = 80 MeV and the ^{12}C and ^{13}C targets at E_{p} = 50 MeV. As for the ^{12}C and ^{13}C(p, n) reactions, D_{NN} for the transitions corresponding to the Gamow-Teller type and the Fermi and Gamow-Teller mixed type are compared to distorted-wave Born-approximation calculations. Observed D_{NN} values are reproduced reasonably well by the calculations employing either the effective interactions M3Y or the M3Ym in which V_{Tτ} and V_{στ} are modified. A value for R^{2} = [σ_{GT}(0°)/σ_{F}(0°)][B(F)/B(GT)] is deduced by using only the D_{NN} data from the ^{13}C(p, n) reaction, and is roughly consistent with R = 1 55E_{p}, empirically determined from the cross-section data at 0°. As for the ^{40}Ca(p, n) reaction, the observed value for the giant-dipole-resonance region is D_{NN} = 0.23±0.05, indicating that the spinflip and non-spinflip resonances are unresolved. Utilizing information from higher-energy D_{NN} data, the transition-strength ratio f of non-spinflip to spinflip and D_{NN}(SF) pertinent to spinfli[ transitions have been deduced empirically for the giant-dipole-resonance region. Obtained f and D_{NN}(SF) values are 1.4±0.4 and -0.25±0.10, respectively, and are roughly consistent with the RPA calculations.

Original language | English |
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Pages (from-to) | 45-61 |

Number of pages | 17 |

Journal | Nuclear Physics, Section A |

Volume | 579 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - 1994 Oct 17 |

### Keywords

- Nuclear Reactions

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

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## Cite this

^{12}C,

^{13}C and

^{40}Ca at 80 and 50 MeV.

*Nuclear Physics, Section A*,

*579*(1-2), 45-61. https://doi.org/10.1016/0375-9474(94)90792-7