### Abstract

The (p, n) cross sections for the 0^{+} → 1^{+} excitation are studied experimentally at E_{p} = 35 MeV in eight nuclei with T_{z} = (N - Z)/2 = 1, ^{14}C, ^{18}O, ^{22}Ne, ^{26}Mg, ^{30}Si, ^{34}S, ^{38}Ar and ^{42}Ca. It is found that the peak (p, n) cross sections around θ ≈ 30° are proportional to the corresponding β^{+}-decay rates of the T_{z} = -1 partners of the T = 1 multiplets. We propose a prescription to extract GT matrix elements in light nuclei from (p, n) cross sections using such proportionality. The method is applied to determine an unknown B(GT) matrix element in ^{26}Al, which is energetically inaccessible by β^{+}-decay experiments.

Original language | English |
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Pages (from-to) | 40-45 |

Number of pages | 6 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 539 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - 2002 Jul 11 |

### Keywords

- (p, n) reaction
- Gamow-Teller matrix elements
- Spin-isospin excitation
- TOF measurement

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

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## Cite this

_{p}= 35 MeV.

*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*,

*539*(1-2), 40-45. https://doi.org/10.1016/S0370-2693(02)02036-1