Photoneutron cross sections of 208 Pb and 197 Au
197016 pages
Published in:
- Nucl.Phys.A 159 (1970) 561-576
- Published: 1970
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Abstract: (Elsevier)
Partial photoneutron cross sections σ γ , n , σ γ , 2 n , σ γ , 3 n and σ γ ·4 n of 208 Pb and 197 Au were measured using a monochromatic photon beam and a neutron detecting system capable of analysing directly and simultaneously interactions of the type ( y, xn ) in the photon energy range 6 MeV ≦ E ≦ 35 MeV. Nuclear information extracted from these data includes threshold values, integrated cross sections and giant dipole resonance parameters obtained by means of Lorentz line fitting. A tentative analysis of the structure observed on the rising shoulder of the giant resonance of 208 Pb is presented. The level density parameters a as well as the non-statistical neutron contributions obtained from a study of the competition between the (γ, n) and (γ, 2n) decay modes, are also given.- Nuclear reactions 197 Au, 208 Pb(γ, 2n), (γ, 2n), (γ, 3n), (γ, 4n), E = 6–35 MeV
- measured σ ( E )
- deduced integrated σ
- 197 Au, 208 Pb deduced giant resonance parameters
- Nuclear reactions 197Au, 208Pb(γ, 2n), (γ, 2n), (γ, 3n), (γ, 4n), E= 6–35 MeV
- measured σ( E)
- 197Au, 208Pb deduced giant resonance parameters
References(49)
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