Proton radius of 14Be from measurement of charge-changing cross sections

S. Terashima, I. Tanihata, R. Kanungo, A. Estradé, W. Horiuchi, F. Ameil, J. Atkinson, Y. Ayyad, D. Cortina-Gil, I. Dillmann, A. Evdokimov, F. Farinon, H. Geissel, G. Guastalla, R. Janik, M. Kimura, R. Knoebel, J. Kurcewicz, Yu A. Litvinov, M. MartaM. Mostazo, I. Mukha, T. Neff, C. Nociforo, H. J. Ong, S. Pietri, A. Prochazka, C. Scheidenberger, B. Sitar, Y. Suzuki, M. Takechi, J. Tanaka, J. Vargas, J. S. Winfield, H. Weick

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The charge-changing cross sections of 7,9-12,14Be have been measured at 900AMeV on a carbon target. These cross sections are discussed both in terms of a geometrical and a Glauber model. From several different analyses of the cross sections, the proton distribution radius (proton radius) of {}^{14}{\rm Be} is determined for the first time to be 2.41 \pm 0.04 fm. A large difference in the proton and neutron radii is found. The proton radii are compared to the results of fermionic molecular dynamics (FMD) and antisymmetrized molecular dynamics (AMD) calculations.

Original languageEnglish
Article number101D02
JournalProgress of Theoretical and Experimental Physics
Issue number10
StatePublished - Jul 2 2014


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