Nuclear-matter distribution in the proton-rich nuclei 7Be and 8B from intermediate energy proton elastic scattering in inverse kinematics

A. V. Dobrovolsky, G. A. Korolev, A. G. Inglessi, G. D. Alkhazov, G. Colò, I. Dillmann, P. Egelhof, A. Estradé, F. Farinon, H. Geissel, S. Ilieva, Y. Ke, A. V. Khanzadeev, O. A. Kiselev, J. Kurcewicz, X. C. Le, Yu A. Litvinov, G. E. Petrov, A. Prochazka, C. ScheidenbergerL. O. Sergeev, H. Simon, M. Takechi, S. Tang, V. Volkov, A. A. Vorobyov, H. Weick, V. I. Yatsoura

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Abstract

Absolute differential cross sections for elastic p7Be and p8B small-angle scattering were measured in inverse kinematics at an energy of 0.7 GeV/u at GSI Darmstadt. The hydrogen-filled ionization chamber IKAR was used as an active target to detect the recoil protons. The projectile tracking and isotope identification were performed with multi-wire proportional chambers and scintillation detectors. The measured cross sections were analysed using the Glauber multiple-scattering theory. The root-mean-square (rms) nuclear matter radii Rm=2.42(4) fm for 7Be and Rm=2.58(6) fm for 8B were obtained. The radial density distribution deduced for 8B exhibits a proton halo structure with the rms halo radius Rh=4.24(25) fm. A comparison of the deduced experimental radii is displayed with existing experimental and theoretical data.

Original languageEnglish
Pages (from-to)40-58
Number of pages19
JournalNuclear Physics A
Volume989
DOIs
StatePublished - Sep 2019

Keywords

  • B
  • Be
  • Nuclear matter distribution
  • Nuclear matter radii
  • Proton-nucleus elastic scattering

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