Eur. Phys. J. A (2006) 28: 295-299
https://doi.org/10.1140/epja/i2006-10058-0

Nuclear Structure and Reactions

Scattering of ¹¹Be halo nucleus from ²⁰⁹Bi at the Coulomb barrier

¹ Dipartimento di Fisica and INFN, via Marzolo 8, I-35131, Padova, Italy
² Dipartimento di Scienze Fisiche and INFN, Complesso Universitario di Monte S. Angelo, via Cinthia, I-80125, Napoli, Italy
³ The Institute of Physical and Chemical Research (RIKEN), 351-0198, Saitama, Japan
⁴ Istituto di Fisica Generale ed Applicata and INFN, via Celoria 16, I-20133, Milano, Italy
⁵ National Institute for Physics and Nuclear Engineering - “Horia Hulubei”, 407 Atomistilor st., 077125, Magurele, Romania
⁶ Dipartimento di Fisica and INFN, via delle Scienze 208, I-33100, Udine, Italy
⁷ INFN - Laboratori Nazionali di Legnaro, viale dell'Università 2, I-35020, Legnaro (Padova), Italy
⁸ TRIUMF, 4004 Wesbrook Mall, Vancouver, Canada
⁹ Institute of Particle and Nuclear Studies (KEK), 1-1 Oho, 305-0801, Ibaraki, Japan

^* e-mail: signorini@pd.infn.it

Received: 27 March 2006
Accepted: 9 June 2006
Published online: 14 July 2006

Abstract

The scattering of the radioactive, weakly bound, halo nucleus ¹¹Be from ²⁰⁹Bi has been studied at 40MeV beam energy. The measurement performed with a low-intensity and a large-emittance secondary beam could be made using an extremely compact, large solid angle (∼ 2π sr) detecting set-up, based on 8 highly segmented Si telescopes. The ^{11, 9}Be scattering angular distributions, as well as their relative reaction cross-sections, resulted to be rather similar. This may suggest that at Coulomb barrier energies the halo structure and the very small binding energy of the ¹¹Be projectile have no big influence on the reaction dynamics.