Phys. Rev. Lett. 84, 35 - 38 (2000)One-Neutron Knockout from Individual Single-Particle States of 11Be
T. Aumann1,2, A. Navin1,3, D. P. Balamuth4, D. Bazin1, B. Blank5, B. A. Brown1,6, J. E. Bush4, J. A. Caggiano1,6, B. Davids1,6, T. Glasmacher1,6, V. Guimarães7, P. G. Hansen1,6, R. W. Ibbotson1, D. Karnes1, J. J. Kolata7, V. Maddalena1,6, B. Pritychenko1,6, H. Scheit1,6, B. M. Sherrill1,6, and J. A. Tostevin8 Received 1 June 1999 The structure of the halo nucleus 11Be has been studied using the reaction 9Be(11Be,10Be+γ)X at 60 MeV/nucleon. The ground state structure of 11Be is determined by comparing the experimental cross sections to a calculation combining spectroscopic factors from the shell model with l-dependent single-particle cross sections obtained in an eikonal model. This experiment shows the dominant 1s single-particle character of the 11Be ground state and indicates a small contribution of 0d admixture in the wave function. After correction for the approximately 22% intensity to excited levels, a clean and precise distribution of parallel momentum for knockout from the 1s halo wave function is obtained for the first time. ©2000 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.84.35 [ Abstract | Previous article | Next article | Issue 1 ] |
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