One-nucleon removal cross-sections for $\mathsf{^{17,19}C}$ and $\mathsf{^{8,10}B}$

D. Cortina-Gil; T. Baumann; H. Geissel; H. Lenske; K. Sümmerer; L. Axelsson; U. Bergmann; M.J.G. Borge; L.M. Fraile; M. Hellström; M. Ivanov; N. Iwasa; R. Janik; B. Jonson; K. Markenroth; G. Münzenberg; F. Nickel; T. Nilsson; A. Ozawa; K. Riisager; G. Schrieder; W. Schwab; H. Simon; C. Scheidenberger; B. Sitar; T. Suzuki; M. Winkler

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A 10, 49-56

One-nucleon removal cross-sections for $\mathsf{^{17,19}C}$ and $\mathsf{^{8,10}B}$

D. Cortina-Gil¹, T. Baumann¹, H. Geissel¹, H. Lenske², K. Sümmerer¹, L. Axelsson³, U. Bergmann⁴, M.J.G. Borge⁵, L.M. Fraile⁵, M. Hellström¹, M. Ivanov⁶, N. Iwasa⁷, R. Janik⁶, B. Jonson³, K. Markenroth³, G. Münzenberg¹, F. Nickel¹, T. Nilsson³, A. Ozawa⁷, K. Riisager⁴, G. Schrieder⁸, W. Schwab¹, H. Simon⁸, C. Scheidenberger¹, B. Sitar⁶, T. Suzuki⁷ and M. Winkler¹

¹ Gesellschaft für Schwerionenforschung, 64291 Darmstadt, Germany
² Institut für Theoretische Physik I, 35392 Giessen, Germany
³ Fysiska Institutionen, Chalmers Tekniska Högskola, 412 96 Göteborg, Sweden
⁴ Institut for Fysik og Astronomi, Aarhus Universitet, 8000 Aarhus C, Denmark
⁵ Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
⁶ Faculty of Mathematics and Physics, Comenius University, 84215 Bratislava, Slovakia
⁷ RIKEN, 2-1 Hirosawa, Wako, Saitama 351-01, Japan
⁸ Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany

d.cortina@usc.es, d.cortina@gsi.de

(Received: 26 July 2000 / Revised version: 5 December 2000 Communicated by D. Guerreau)

Abstract
One-neutron removal cross-sections ( $\sigma_{\mathrm{-1n}}$ ) of $\mathsf{^{17,19}C}$ in various targets at about 900 MeV/nu cle on, and one-proton removal cross-sections ( $\sigma_{\mathrm{-1p}}$ ) of $\mathsf{^{8,10}B}$ at about 1400 MeV/nucleon were measured using the fragment separator FRS at GSI. A significant increase of $\sigma_{\mathrm{-1n}}$ for $\mathsf{^{19}C}$ compared to its neighbors was observed. The same behavior was found for $\sigma_{\mathrm{-1p}}$ for the neutron-deficient nucleus $\mathsf{^{8}B}$ compared to the stable isotope $\mathsf{^{10}B}$ . These results support a one-neutron halo structure in $\mathsf{^{19}C}$ and a one-proton halo in $\mathsf{^{8}B}$ .

PACS
25.60.Gc - Breakup and momentum distributions.
27.20.+n - Properties of specific nuclei $6 \le A \le 19$ .

© Società Italiana di Fisica, Springer-Verlag 2001