Table of Nuclides Frequently Asked Questions |

2.2: Integral Cross Section |

Resonance integral for Ni-58(n,p) |

I found a resonance integral for Ni-58 (n,p) reaction of several
millibarns on the Website data page. Since this is a threshold reaction at about 1.9 Mev with a maximum of 600 millibarns in the Mev region is the resonance integral for energies less than 1 Mev 858.7 mb correct? I suspect an error in the data set or the data to Web site conversion? |

The Ni-58(n,p) reaction was exotic reaction with Q=0.402 MeV. So it is not
threshold reaction. However, practical thresold of the reaction was 0.5 MeV. Since the resonance integral is defined as integral of sig(E)/E from 0.5 eV to 20 MeV, the resonance integral can be larger than the average or peak cross section. Anyway, the resonance integral other than capture and fission is not used in practical work. The value of 858.7 mb is correct ( within evaluation limit ) when we follow the definition. |

**2. Table of Nuclides**- 2.1. Decay Data
- 170Yb decay mode
- Binding energy
- Meta Stable State
- Complete Table of Decay Data
- Decay Constant
- Electron Capture and Beta-plus Decay
- Error in He-6
- Tc-99m
- 85Y gamma intensity
- 79Se
- Rh-102
- Nuclide Chart half-life in MEV?
- Half life of U-235
- Lr-257 and Se-82
- Unit of Intensity
- n-0
- Half-life of Th-229
- Be-5
- Decay heat (137Cs decay)
- Half-life of Ag-108m

- 2.2. Integral Cross Section
- 2.3. Chart of Nuclides
- 2.4. Beta Specrtum
- 2.5. Others

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