The cross section of14N(n, p)14C at stellar energies and its role as a neutron poison forS-process nucleosynthesis
Brehm, K. ; Becker, H. W. ; Rolfs, C. ; Trautvetter, H. P. ; Käppeler, F. ; Ratynski, W.
Springer
Published 1988
Springer
Published 1988
| ISSN: |
1434-601X
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| Keywords: |
95.30.C ; 97.10.C ; 25.70
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract The absolute average cross section 〈σ〉 of the14N(n, p)14C reaction has been measured using neutron spectra that closely resemble Maxwell-Boltzmann distributions with thermal energies of kT=25.0 and 52.4 keV: 〈σ〉=0.81±0.05 and 0.52±0.06 mb, respectively. The resulting reaction rates are nearly the same at T9=0.29 and 0.61, and their average, NA〈συ〉=(1.3±0.1)×105 cm3 s−1 mol−1, is about a factor of three smaller than the previously adopted values obtained by extrapolation between thermal and higher-energy data. Thus, the14N(n, p)14C reaction plays a correspondingly smaller role as a neutron poison fors-process nucleosynthesis.
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| Type of Medium: |
Electronic Resource
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| URL: |