Nuclear Physics A 860 (2011) 8–21 www.elsevier.com/locate/nuclphysa The 7 Li( 18 O, 16 N) 9 Be reaction and optical potential of 16 N + 9 Be versus 16 O + 9 Be A.T. Rudchik a,∗ , Yu.M. Stepanenko a , K.W. Kemper b , A.A. Rudchik a , O.A. Ponkratenko a , E.I. Koshchy c , S. Kliczewski d , K. Rusek e,f , A. Budzanowski d , S.Yu. Mezhevych a , Val.M. Pirnak a , B. Czech d , R. Siudak d , I. Skwirczy ´ nska d , A. Szczurek d , J. Choi ´ nski f , L. Glowacka g a Institute for Nuclear Research, Ukrainian Academy of Sciences, Prospect Nauki 47, 03680 Kyiv, Ukraine b Physics Department, Florida State University, Tallahassee, FL 32306-4350, USA c Kharkiv National University, pl. Svobody 4, 61077 Kharkiv, Ukraine d H. Niewodnicza´ nski Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, PL-31-342 Cracow, Poland e A. Soltan Institute for Nuclear Studies, ul. Ho˙ za69, PL-00-681 Warsaw, Poland f Heavy Ion Laboratory of Warsaw University, ul. L. Pasteura 5A, PL-02-093 Warsaw, Poland g Institute of Applied Physics, MUT, ul. Kaliskiego 2, PL-00-908 Warsaw, Poland Received 9 April 2011; received in revised form 3 May 2011; accepted 6 May 2011 Available online 14 May 2011 Abstract Angular distributions for the 7 Li( 18 O, 16 N) 9 Be reaction at an energy of E lab ( 18 O) = 114 MeV for the ground and excited states of 9 Be and 16 N were measured. The data were analyzed within the coupled- reaction-channels method for one- and two-step transfers of nucleons and clusters. The 7 Li + 18 O optical potential fitted to the 7 Li + 18 O elastic and inelastic scattering data was used in the reaction calcula- tions. The needed spectroscopic amplitudes for transferred nucleons and clusters were calculated within the translational-invariant shell model. The 9 Be + 16 N potential parameters were deduced by fitting 7 Li( 18 O, 16 N) 9 Be reaction data for ground and excited states of 9 Be and 16 N. The reaction is dominated by deuteron transfer. The 9 Be + 16 N potential is compared with the 9 Be + 16 O potential deduced by fitting previously reported 9 Be + 16 O elastic scattering data at energies E c.m. = 5.4–100.9 MeV and found to be less strongly absorbing.  2011 Elsevier B.V. All rights reserved. * Corresponding author. E-mail address: rudchik@kinr.kiev.ua (A.T. Rudchik). 0375-9474/$ – see front matter  2011 Elsevier B.V. All rights reserved. doi:10.1016/j.nuclphysa.2011.05.003