Issue |
EPJ Web of Conferences
Volume 3, 2010
19th International IUPAP Conference on Few-Body Problems in Physics
|
|
---|---|---|
Article Number | 06011 | |
Number of page(s) | 9 | |
Section | Nuclear structure | |
DOI | https://doi.org/10.1051/epjconf/20100306011 | |
Published online | 12 April 2010 |
https://doi.org/10.1051/epjconf/20100306011
Important role of three-body repulsive force effect in nuclear reactions
1
Department of Physics, Osaka City University,
Osaka
558-8585,
Japan
2
RIKEN Nishina Center, RIKEN, Wako, Saitama
351-0198,
Japan
3
Physics Section, Tsuru University, Tsuru, Yamanashi
402-8555,
Japan
a e-mail: furumoto@ocunp.hep.osaka-cu.ac.jp
b e-mail: sakuragi@ocunp.hep.osaka-cu.ac.jp
c e-mail: yamamoto@tsuru.ac.jp
The effect of three-body force (TBF) is studied in nucleus-nucleus elastic scattering on the basis of Brueckner theory for nucleon-nucleon (NN) effective interaction (complex G matrix) in the nuclear matter. A new G matrix called CEG07 proposed recently by the present authors includes the TBF effect and reproduces a realistic saturation curve in the nuclear matter, and is shown to well reproduce proton-nucleus elastic scattering. The microscopic optical potential for nucleus-nucleus system is obtained by folding the G matrix with nucleon density distributions in colliding nuclei. We first analyze the 16O + 16O elastic scattering at E/A = 70 MeV in detail. The observed cross sections are nicely reproduced up to the most backward scattering angles only when the TBF effect is included. The effects of the three-body attraction (TBA) and three-body repulsion (TBR) are also analyzed. The TBR contribution has an important role in nucleus-nucleus elastic scattering. The CEG07 G matrix is also tested in the elastic scattering of 16O by the 12C, 28Si and 40Ca targets at E/A = 93.9 MeV, and in the elastic scattering of 12C by the 12C target at E/A = 135 MeV with a great success. The decisive effect of the TBF is clearly seen also in those systems.
© Owned by the authors, published by EDP Sciences, 2010
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