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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 |
| Institution: | 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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