| NUCLEAR PHYSICS |
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The influence of Isospin Dependence of In-Medium NN Cross Sections on the Ratio of Emitted Neutrons to Protons in HICs |
| JIA Yi-Jian1,2, ZHANG Ying-Xun2, LI Zhu-Xia2, LU Xiao-Hua2, LIU Fu-Hu1 |
| 1Institute of Theoretical Physics, Shanxi University, Taiyuan 0300062China Institute of Atomic Energy, PO Box 275(18), Beijing 102413 |
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| Cite this article: |
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JIA Yi-Jian, ZHANG Ying-Xun, LI Zhu-Xia et al 2009 Chin. Phys. Lett. 26 072502 |
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Abstract The influence of isospin dependence of in-medium nucleon-nucleon cross sections on the n/p ratios for emitted nucleons in reactions 96Zr+96Zr and 96Ru+96Ru at Eb=400AMeV is investigated by means of an improved quantum molecular dynamics model. Our results show that the high energy part of the spectra of the n/p ratios for emitted nucleons is sensitive to the isospin dependence of in-medium nucleon-nucleon cross sections for neutron-rich reaction systems. Therefore, we propose that the n/p ratio of emitted high energy nucleons in a very neutron-rich reaction system at several hundreds of AMeV can be taken as sensitive observables to constrain the isospindependence of in-medium nucleon-nucleon cross sections.
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| Keywords:
25.70.-z
21.30.Fe
21.65.+f
24.10.Lx
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Received: 12 February 2009
Published: 02 July 2009
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| PACS: |
25.70.-z
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(Low and intermediate energy heavy-ion reactions)
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21.30.Fe
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(Forces in hadronic systems and effective interactions)
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21.65.+f
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24.10.Lx
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(Monte Carlo simulations (including hadron and parton cascades and string breaking models))
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