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Analyzing Power in Elastic Scattering of Polarized Protons from Neutron-rich Helium Isotopes |
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| Authors: | S. Sakaguchi Y. Iseri T. Uesaka M. Tanifuji N. Aoi E. Hiyama Y. Ichikawa S. Ishikawa K. Itoh M. Itoh H. Iwasaki T. Kawabata T. Kawahara H. Kuboki Y. Maeda T. Nakao H. Okamura H. Sakai Y. Sasamoto M. Sasano Y. Satou K. Sekiguchi K. Suda D. Suzuki A. Tamii T. Wakui K. Yako M. Yamaguchi Y. Yamamoto |
| Affiliation: | 1. Department of Physics, Kyushu University, Fukuoka, 812-8581, Japan 2. Chiba-Keizai College, Chiba, 263-0021, Japan 3. RIKEN Nishina Center, Saitama, 351-0198, Japan 4. Science Research Center, Hosei University, Tokyo, 102-8160, Japan 5. Department of Physics, University of Tokyo, Tokyo, 113-0033, Japan 6. Department of Physics, Saitama University, Saitama, 338-8570, Japan 7. Cyclotron & Radioisotope Center, Tohoku University, Miyagi, 980-8578, Japan 8. Center for Nuclear Study, University of Tokyo, Tokyo, 113-0001, Japan 9. Department of Physics, Toho University, Chiba, 274-8510, Japan 10. Research Center for Nuclear Physics, Osaka University, Osaka, 567-0047, Japan 11. Department of Physics, Tokyo Institute of Technology, Tokyo, 152-8551, Japan 12. Graduate School of Medicine, Gunma University, Gunma, 229-8510, Japan 13. Tsuru University, Yamanashi, 402-8555, Japan |
| Abstract: | The vector analyzing power has been measured for the elastic scattering of neutron-rich 6He from polarized protons at 71 MeV/nucleon. Two approaches based on local one-body potentials were applied to investigate the spin-orbit interaction between a proton and a 6He nucleus. An optical model analysis revealed that the spin-orbit potential for 6He is characterized by a shallow and long-ranged shape compared with the global systematics of stable nuclei. A semi-microscopic analysis with a α + n + n cluster folding model suggests that the inclusion of realistic interaction between a proton and the α core is important in describing the p-6He elastic scattering. |
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