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JAEA Reports

Program CCOM; Coupled-channels optical model calculation with automatic parameter search

Iwamoto, Osamu

JAERI-Data/Code 2003-020, 22 Pages, 2003/12

JAERI-Data-Code-2003-020.pdf:0.98MB

A new program of coupled-channels optical model calculation has been developed for the evaluation of actinide nuclei. The code is composed of by the modules having high independency and large flexibility. The code is written by C++ language using object oriented techniques. The program has capability of fitting of the parameters even for the several nuclei at the same time. The formulae required in the calculation, details of the numerical treatments and the input parameters are described. The examples of the input file and the output are also shown.

Journal Articles

Coupled-channels analysis of nucleon interaction data of $$^{28,30}$$Si up to 200 MeV based on the soft rotator model

Sun, W.*; Watanabe, Yukinobu*; Sukhovitskij, E.*; Iwamoto, Osamu; Chiba, Satoshi

Journal of Nuclear Science and Technology, 40(9), p.635 - 643, 2003/09

https://doi.org/10.3327/jnst.40.635
 Times Cited Count：10 Percentile：56.31(Nuclear Science & Technology)

A consistent analysis for nuclear level structure and nucleon scattering data up to 200 MeV were performed for sd-shell nuclei, $$^{28,30}$$Si, using a unified framework of soft-rotator model and coupled-channels approach. The soft-rotator model parameters and optical model parameters were derived. The calculations showed good agreement with experimental data for both collective level and nucleon interaction data -- neutron total cross sections, proton reaction cross sections, and nucleon scattering angular distributions.

JAEA Reports

Evaluation of neutron-induced reactions on $$^{236}$$Pu for JENDL-3.3

Iwamoto, Osamu; Nakagawa, Tsuneo

JAERI-Research 2002-013, 18 Pages, 2002/07

JAERI-Research-2002-013.pdf:0.7MB

Cross sections and energy-angular distributions of emitted neutrons were evaluated for the neutron-incident reactions on $$^{236}$$Pu in the incident energy range of 10eV to 20MeV by using a statistical model combined with a coupled channel optical model. The calculated results were compiled to the latest evaluated nuclear data library JENDL-3.3 in the ENDF-6 format. The unresolved resonance region is assumed to be from 10eV to 30keV, and the averaged resonance parameters were obtained to reproduce the calculated cross sections. Maxwell temperatures for fission neutron spectra were estimated from a systematics with a correction for prefission neutrons.

JAEA Reports

Consistent analysis of collective level structure and neutron interaction data for $$^{12}$$C in the framework of the soft-rotator model

Sukhovitskii, E. S.*; Y.V.Porodzinskii*; Iwamoto, Osamu; Chiba, Satoshi

JAERI-Research 97-059, 24 Pages, 1997/09

JAERI-Research-97-059.pdf:0.94MB

no abstracts in English

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