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Nuclear photofissility in the quasi-deuteron energy region

Author:
de Paiva, E  Tavares, OAP  Terranova, ML  


Journal:
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS


Issue Date:
2001


Abstract(summary):

Two hundred experimental photofissility data obtained in the quasi-deuteron region (similar to 30-140 MeV) of photonuclear absorption covering the target nuclei Al-27, Ti-nat, V-51, Sm-154, Yb-174, Hf-nat, Ta-181, W-nat, Re-nat, Os-nat, Pt-nat, Au-197, Tl-nat, Pb-208, Pb-nat and Bi-209 have been analysed within the framework of the current two-step model for intermediate-energy photofission reactions. The incoming photon is assumed to be absorbed by a neutron-proton pair (Levinger's quasi-deuteron model), followed by a mechanism of evaporation-fission competition for the excited residual nuclei. The experimental features of photofissility have been reproduced successfully by the model.


Page:
1435---1458


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