Does break-up affect $^9$Be + $^{209}$Bi fusion at the barrier?

C. Signorini; Z.H. Liu; Z.C. Li; K.E.G. Löbner; L. Müller; M. Ruan; K. Rudolph; F. Soramel; C. Zotti; A. Andrighetto; L. Stroe; A. Vitturi; H.Q. Zhang

doi:doi:10.1007/s100500050250

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A 5, 7-11

Short note

Does break-up affect ⁹Be + ²⁰⁹Bi fusion at the barrier?

C. Signorini¹ - Z.H. Liu^2,5 - Z.C. Li^1,5 - K.E.G. Löbner³ - L. Müller¹ - M. Ruan² - K. Rudolph³ - F. Soramel⁴ - C. Zotti³ - A. Andrighetto¹ - L. Stroe¹ - A. Vitturi¹ - H.Q. Zhang⁵

¹ Physics Department of University and INFN, via Marzolo 8, I-35131 Padova, Italy
² INFN, Legnaro National Laboratories, Legnaro, Padova, Italy
³ Sektion Physik, Ludwig-Maximilians-Universität München, D-85748 Garching, Germany
⁴ Physics Department of University and INFN, via delle Scienze 208, I-33100 Udine, Italy
⁵ China Institute of Atomic Energy, P.O.Box 275(10), Beijing 102413, P.R. of China

Received: 22 February 1999 / Revised version: 26 March 1999 Communicated by D. Schwalm

Abstract
The ⁹Be + ²⁰⁹Bi fusion cross sections were measured in the 36.0 MeV $\leq$ E_lab $\leq$ 50.0 MeV range, down to 0.6 mb, with high accuracy via in-beam detection of the ground state $\alpha$ -decay of the evaporation residues produced. The elastic scattering cross sections around 150^o and 135^o were also obtained with moderate angular resolution. The cross sections below the barrier are reproduced by coupled channel calculations which include only one break-up channel with a moderate strength and a phenomenological renormalization of the potential depth. These simple calculations overestimate the cross sections above the barrier most likely due to the fact that the ⁹Be break-up process becomes much stronger. The barrier distributions extracted do not have evident break-up signature since they show one-barrier structure.