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

Zamora, J. C., Aumann, T., Bagchi, S., Boenig, S., Csatlos, M., Dillmann, I., Dimopoulou, C., Egelhof, P., Eremin, V., Furuno, T., Geissel, H., Gernhaeuser, R., Harakeh, M. N., Hartig, A. -L., Ilieva, S., Kalantar-Nayestanaki, N., Kiselev, O., Kollmus, H., Kozhuharov, C., Krasznahorkay, A., Kroell, T., Kuilman, M., Litvinov, S., Litvinov, Y. A., Mahjour-Shafiei, M., Mutterer, M., Nagae, D., Najafi, M. A., Nociforo, C., Nolden, F., Popp, U., Rigollet, C., Roy, S., Scheidenberger, C., von Schmid, M., Steck, M., Streicher, B., Stuhl, L., Thuerauf, M., Uesaka, T., Weick, H., Winfield, J. S., Winters, D., Woods, P. J., Yamaguchi, T., Yue, K. & Zenihiro, J., 22-Sep-2017, In : Physical Review C. 96, 3, 6 p., 034617.

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

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  • 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. Krasznahorkay
  • Th. 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

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.

Original languageEnglish
Article number034617
Number of pages6
JournalPhysical Review C
Issue number3
Publication statusPublished - 22-Sep-2017



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