Publikationsdatum:
2016-07-21
Beschreibung:
. The nat Mo( \( \gamma\) , x n) 90, 91, 99 Mo reaction cross-sections were experimentally determined for the bremsstrahlung end-point energies of 12, 14, 16, 45, 50, 55, 60 and 70MeV by activation and off-line \( \gamma\) -ray spectrometric technique and using the 20MeV electron linac (ELBE) at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany, and the 100MeV electron linac at the Pohang Accelerator Laboratory (PAL), Pohang, Korea. The nat Mo( \( \gamma\) , x n) 88, 89, 90, 91, 99 Mo reaction cross-sections as a function of photon energy were also calculated using the computer code TALYS 1.6. The flux-weighted average cross-sections were obtained from the literature data and the calculated values of TALYS based on mono-energetic photons and are found to be in general agreement with the present results. The flux-weighted average experimental and theoretical cross-sections for the nat Mo( \( \gamma\) , x n) 88, 89, 90, 91, 99 Mo reactions increase with the bremsstrahlung end-point energy, which indicates the role of excitation energy. After a certain energy, the individual nat Mo( \( \gamma\) , x n) reaction cross-sections decrease with the increase of bremsstrahlung energy due to opening of other reactions, which indicates sharing of energy in different reaction channels. The 100 Mo( \( \gamma\) , n) reaction cross-section is important for the production of 99 Mo , which is a probable alternative to the 98 Mo(n, \( \gamma\) ) and 235 U(n, f ) reactions.
Print ISSN:
1434-6001
Digitale ISSN:
1434-601X
Thema:
Physik
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