Abstract
Neutron-induced cross-sections for the stable isotope 181 Ta, in the energy region up to 20 MeV have been calculated. Statistical model calculations, based on the Hauser–Feshbach formalism, have been carried out using the TALYS-1.0 and were compared with available experimental data in the literature and with ENDF/B-VII, T = 300 K; JENDL-3.3, T = 300 K and JEFF-3.1, T = 300 K evaluated libraries.
Highlights
With the advent of fast computers, software that simulates nuclear reactions is able to play an increasingly important role in nuclear data
It is well known that semiclassical models, such as the exciton model, have had some problems in describing angular distributions
It is well known that for nuclear reactions involving projectiles and ejectiles with different particle numbers, mechanisms such as stripping, pickup, and knockout play an important role, and these direct like reactions to the continuum are not covered by the exciton model
Summary
With the advent of fast computers, software that simulates nuclear reactions is able to play an increasingly important role in nuclear data. Where pπ (pν) is the proton (neutron) particle number and hπ (hν) the proton (neutron) hole number, σCF is the compound formation cross section, and Spre is the timeintegrated strength which determines how long the system remains in a certain exciton configuration. The emission rate wk for ejectile k with spin sk is given by where σk,inv(Ek) is the inverse reaction cross section as calculated from the optical model, and ω is the twocomponent particle-hole state density.
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