| Autor: |
Schillebeeckx, P., Belgya, T., Borella, A., Kopecky, S., Mengoni, A., Quétel, C. R., Szentmiklósi, L., Trešl, I., Wynants, R. |
| Předmět: |
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| Zdroj: |
European Physical Journal A -- Hadrons & Nuclei; Nov2013, Vol. 49 Issue 11, p1-8, 8p |
| Abstrakt: |
Gamma-ray transitions following neutron capture in 206Pb have been studied at the cold neutron beam facility of the Budapest Neutron Centre using a metallic sample enriched in 206Pb and a natural lead nitrate powder pellet. The measurements were performed using a coaxial HPGe detector with Compton suppression. The observed $ \gamma$ -rays have been incorporated into a decay scheme for neutron capture in 206Pb . Partial capture cross sections for 206Pb(n, $ \gamma$ ) at thermal energy have been derived relative to the cross section for the 1884keV transition after neutron capture in 14N . From the average crossing sum a total thermal neutron capture cross section of $ 29^{+2}_{-1}$ mb was derived for the 206Pb(n, $ \gamma$ ) reaction. The thermal neutron capture cross section for 206Pb has been compared with contributions due to both direct capture and distant unbound s-wave resonances. From the same measurements a thermal neutron-induced capture cross section of $ (649 \pm 14)$ mb was determined for the 207Pb(n, $ \gamma$ ) reaction. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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