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.

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. Colo, I. Dillmann, P. Egelhof, A. Estrade, F. Farinon, H. Geissel, S. Ilieva, Y. Ke, A.V. Khanzadeev, O.A. Kiselev, J. Kurcewicz, L. X. C., Y.A. Litvinov, G.E. Petrov, A. Prochazka, C. Scheidenberger, L.O. Sergeev, H. Simon, M. Takechi, S. Tang, V. Volkov, A.A. Vorobyov, H. Weick, V.I. Yatsoura. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 989(2019 Sep), pp. 40-58.

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

G. Colo;
2019

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.
7; Be; 8; B; Nuclear matter distribution; Nuclear matter radii; Proton-nucleus elastic scattering
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/727552
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