Nuclear-matter radius studies from Ni-58(alpha,alpha) experiments at the GSI Experimental Storage Ring with the EXL facility

J. C. Zamora*, T. Aumann, S. Bagchi, S. Boenig, M. Csatlos, I. Dillmann, C. Dimopoulou, P. Egelhof, V. Eremin, T. Furuno, H. Geissel, R. Gernhaeuser, M. N. Harakeh, A. -L. Hartig, S. Ilieva, N. Kalantar-Nayestanaki, O. Kiselev, H. Kollmus, C. Kozhuharov, A. KrasznahorkayTh. Kroell, M. Kuilman, S. Litvinov, Yu. A. Litvinov, M. Mahjour-Shafiei, M. Mutterer, D. Nagae, M. A. Najafi, C. Nociforo, F. Nolden, U. Popp, C. Rigollet, S. Roy, C. Scheidenberger, M. von Schmid, M. Steck, B. Streicher, L. Stuhl, M. Thuerauf, T. Uesaka, H. Weick, J. S. Winfield, D. Winters, P. J. Woods, T. Yamaguchi, K. Yue, J. Zenihiro

*Bijbehorende auteur voor dit werk

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Samenvatting

A novel method for measuring nuclear reactions in inverse kinematics with stored ion beams was successfully used to extract the nuclear-matter radius of Ni-58. The experiment was performed at the experimental heavy-ion storage ring at the GSI facility using a stored Ni-58 beam at energies of 100 and 150 MeV/u and an internal helium gas-jet target. Elastically scattered a-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 Ni-58 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.

Originele taal-2English
Artikelnummer034617
Aantal pagina's6
TijdschriftPhysical Review C
Volume96
Nummer van het tijdschrift3
DOI's
StatusPublished - 22-sep-2017

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