Nuclear-matter radius studies from Ni58(α,α) experiments at the GSI Experimental Storage Ring with the EXL facility
| Autor: | Hans Geissel, Tatsuya Furuno, Santosh Roy, C. Dimopoulou, U. Popp, J. S. Winfield, Takayuki Yamaguchi, Iris Dillmann, F. Nolden, M. Csatlós, Yu. A. Litvinov, Peter Egelhof, M. Kuilman, M.N. Harakeh, D. Nagae, B. Streicher, P. J. Woods, Th. Kroell, M. Steck, H. Kollmus, S. Boenig, L. Stuhl, O. Kiselev, M. A. Najafi, Juzo Zenihiro, M. Thuerauf, Tomohiro Uesaka, C. Scheidenberger, C. Nociforo, Nasser Kalantar-Nayestanaki, Thomas Aumann, K. Yue, A.-L. Hartig, Catherine Rigollet, S. Ilieva, C. Kozhuharov, Helmut Weick, M. Mahjour-Shafiei, S. Bagchi, J. C. Zamora, Danyal Winters, V. K. Eremin, Sergey Litvinov, A. Krasznahorkay, M. von Schmid, Manfred Mutterer, Roman Gernhaeuser |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Physical Review C. 96 |
| ISSN: | 2469-9993 2469-9985 |
| DOI: | 10.1103/physrevc.96.034617 |
| Popis: | A novel method for measuring nuclear reactions in inverse kinematics with stored ion beams was successfully used to extract the nuclear-matter radius of $^{58}\mathrm{Ni}$. The experiment was performed at the experimental heavy-ion storage ring at the GSI facility using a stored $^{58}\mathrm{Ni}$ beam at energies of 100 and 150 MeV/u and an internal helium gas-jet target. Elastically scattered $\ensuremath{\alpha}$-recoils at low momentum transfers were measured with an in-ring detector system compatible with ultrahigh vacuum. Experimental angular distributions were fitted using density-dependent optical model potentials within the eikonal approximation. This permitted the extraction of the point-matter root-mean-square radius of $^{58}\mathrm{Ni}$ with an average value of 3.70(7) fm. Results from this work are in good agreement with several experiments performed in the past in normal kinematics. This pioneering experiment demonstrates a major breakthrough towards future investigations with far-from-stability stored beams using the present technique. |
| Databáze: | OpenAIRE |
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