JAEA-Conf 2011-002 - 日本原子力研究開発機構

JAEA-Conf 2011-002
Fig.9 Comparison of predicted (histogram) and observed (circles) mass distribtuion of
fission fragments in the 18O+ 238U reaction. A model parameter (tan) was determined from
the data of 256Fm (left panel)[6], and it was used to predict FFMD of 240U (right panel)
mass distribution from 240U in a unified manner, which alone is a great advancement of
the nuclear model toward practical calculations of fission-related phenomena.
5. Summary
We have an intensive plan at JAEA to develop experimental and theoretical tools to
investigate surrogate reactions to determine neutron cross sections of unstable or rare
nuclei. The project started under financial support from MEXT. I wish to comment
that some variations of the method, such as the inverse kinematics, projectile
fragmentation and even some other methods would be possible as a surrogate method
and in some cases they would be very useful. We are wokring on the direction as well.
Acknowledgments
The present paper containes research results obtained by my colleagues.
Especially, the author is grateful to Dr. K. Ogata of Kyushu University, Drs. K. Nishio
and Y. Aritomo of JAEA for a close collaboration. Present study includes the result of
''Development of a Novel Technique for Measurement of Nuclear Data Influencing the
Design of Advanced Fast Reactors" entrusted to Japan Atomic Energy Agency (JAEA) by
the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
References
[1] G. Kessedjian et al., Phys. Lett. B 692, 297(2010).
[2] N.D. Scielze et al., Phys. Rev. C 81, 034608(2010).
[3] K. Nishio et al., Fall Meeting of Atomic Energy Society of Japan, Sapporo (2010).
[4] S. Chiba and O. Iwamoto, Phys. Rev. C 81, 044604(2010).
[5] K. Ogata, S. Hashimoto and S. Chiba, arXiv:1101.2732 (2011), submitted to Prog.
Theor. Phys.
[6] Y. Aritomo, S. Chiba and K. Nishio, arXiv:1009.5924 (2010), submitted to Phys. Rev. C.
[7] V. Zagrebaev and W. Greiner, J. Phys. G: Nucl. Part. Phys. 31, 825(2005).