The radiative capture of 14.1 MeV neutrons in 138 Ba, W, Pb and 209 Bi
197316 pages
Published in:
- Nucl.Phys.A 213 (1973) 525-540
- Published: 1973
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Abstract: (Elsevier)
Spectra of prompt γ-rays due to radiative capture of 14.1 MeV neutrons to bound nuclear states in natural Ba, W, Pb, and Bi, and the corresponding integrated cross sections are presented. The integrated cross sections for 138 Ba, W, Pb, and 209 Bi are 1600 ± 300 μb. 930 ± 170 μb, 1100 ± 180μb and 950 ± 180 μb, respectively. The values agree with previous observations that the cross sections depend smoothly on mass number. The high energy parts of the experimental spectra and recently published fast neutron capture excitation functions are compared with those calculated according to the two approaches of the direct-semidirect theory, namely, the surface peaked particle-nucleus interaction and the volume type interaction. It is concluded that purely on the grounds of presently known experimental data one cannot judge which form of the coupling interaction is more appropriate for the description of the fast nucleon capture process.- Nuclear reactions
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