Abstract
We have studied optical model fits to total neutron cross sections of structural materials using the accurate data base for {sup 56}Fe existing in the resolved and unresolved resonance region. Averages over resolved resonances were calculated with Lorentzian weighting in Reich-Moore (reduced R matrix) approximation. Starting from the best available optical potentials we found that adjustment of the real and imaginary well depths does not work satisfactorily with the conventional weak linear energy dependence of the well depths. If, however, the linear dependences are modified towards low energies, the average total cross sections can be fitted quite well, from the resolved resonance region up to 20 MeV and higher. (author)
Citation Formats
Kawano, Toshihiko, and Froehner, F H.
Optical model calculation for the unresolved/resolved resonance region of Fe-56.
Japan: N. p.,
1997.
Web.
Kawano, Toshihiko, & Froehner, F H.
Optical model calculation for the unresolved/resolved resonance region of Fe-56.
Japan.
Kawano, Toshihiko, and Froehner, F H.
1997.
"Optical model calculation for the unresolved/resolved resonance region of Fe-56."
Japan.
@misc{etde_530418,
title = {Optical model calculation for the unresolved/resolved resonance region of Fe-56}
author = {Kawano, Toshihiko, and Froehner, F H}
abstractNote = {We have studied optical model fits to total neutron cross sections of structural materials using the accurate data base for {sup 56}Fe existing in the resolved and unresolved resonance region. Averages over resolved resonances were calculated with Lorentzian weighting in Reich-Moore (reduced R matrix) approximation. Starting from the best available optical potentials we found that adjustment of the real and imaginary well depths does not work satisfactorily with the conventional weak linear energy dependence of the well depths. If, however, the linear dependences are modified towards low energies, the average total cross sections can be fitted quite well, from the resolved resonance region up to 20 MeV and higher. (author)}
place = {Japan}
year = {1997}
month = {Mar}
}
title = {Optical model calculation for the unresolved/resolved resonance region of Fe-56}
author = {Kawano, Toshihiko, and Froehner, F H}
abstractNote = {We have studied optical model fits to total neutron cross sections of structural materials using the accurate data base for {sup 56}Fe existing in the resolved and unresolved resonance region. Averages over resolved resonances were calculated with Lorentzian weighting in Reich-Moore (reduced R matrix) approximation. Starting from the best available optical potentials we found that adjustment of the real and imaginary well depths does not work satisfactorily with the conventional weak linear energy dependence of the well depths. If, however, the linear dependences are modified towards low energies, the average total cross sections can be fitted quite well, from the resolved resonance region up to 20 MeV and higher. (author)}
place = {Japan}
year = {1997}
month = {Mar}
}