Cluster-transfer reactions with radioactive beams: A spectroscopic tool for neutron-rich nuclei

Phys. Rev. C

92
024322
(2015)
S. Bottoni, S. Leoni, B. Fornal, R. Raabe, K. Rusek, G. Benzoni, A. Bracco, F. C. L. Crespi, A. I. Morales, P. Bednarczyk, N. Cieplicka-Oryczak, W. Królas, A. Maj, B. Szpak, M. Callens, J. Bouma, J. Elseviers, H. De Witte, F. Flavigny, R. Orlandi, P. Reiter, M. Seidlitz, N. Warr, B. Siebeck, S. Hellgartner, D. Mücher, J. Pakarinen, M. Vermeulen, C. Bauer, G. Georgiev, R. V. F. Janssens, D. Balabanski, M. Sferrazza, M. Kowalska, E. Rapisarda, D. Voulot, M. Lozano Benito and F. Wenander

An exploratory experiment performed at REX-ISOLDE to investigate cluster-transfer reactions with radioactive beams in inverse kinematics is presented. The aim of the experiment was to test the potential of cluster-transfer reactions at the Coulomb barrier as a mechanism to explore the structure of exotic neutron-rich nuclei. The reactions  
7
 Li 
 ⁢( 
98
 Rb 
 ,𝛼⁢xn) and  
7
 Li 
 ⁢( 
98
 Rb 
 ,t⁢xn) were studied through particle-𝛾 coincidence measurements, and the results are presented in terms of the observed excitation energies and spins. Moreover, the reaction mechanism is qualitatively discussed as a transfer of a clusterlike particle within a distorted-wave Born approximation framework. The results indicate that cluster-transfer reactions can be described well as a direct process and that they can be an efficient method to investigate the structure of neutron-rich nuclei at medium-high excitation energies and spins.

DOI
10.1103/PhysRevC.92.024322
Published on
nwarr