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Experimental Study on the Exotic Structure of 12N in RIBLL |
| LI Jia-Xing1, LIU Ping-Ping1, WANG Jian-Song2, HU Zheng-Guo2, MAO Rui-Shi2, LI Chen2, CHEN Ruo-Fu2, SUN Zhi-Yu2, XU Hu-Shan2, XIAO Guo-Qing2, GUO Zhong-Yan2 |
| 1School of Physical Science and Technology, Southwest University, Chongqing 400715 2Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000 |
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| Cite this article: |
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LI Jia-Xing, LIU Ping-Ping, WANG Jian-Song et al 2010 Chin. Phys. Lett. 27 032501 |
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Abstract We measured the total reaction cross sections of 12N in Si at 36.2 MeV/u using Radioactive Ion Beam Line in Lanzhou (RIBLL) with a new method. The reaction target was installed at the intermediate focusing point T1 at RIBLL. This scheme allows us to identify particles before and after the reaction target unambiguously. The total reaction cross section (1760±78 mb) of 12N in Si is obtained. Assuming that 12N consists of a core 11C plus one halo proton, the excitation function of 12N on the Si and C targets is calculated with the Glauber model and the Fermi-Fermi density distributions. It can fit the experimental data very well. A large diffusion of the protons density distribution supports the halo structure for 12N.
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| Keywords:
25.60.Dz
24.10.-i
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Received: 21 May 2009
Published: 09 March 2010
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| PACS: |
25.60.Dz
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(Interaction and reaction cross sections)
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24.10.-i
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(Nuclear reaction models and methods)
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