Eur. Phys. J. A (2005) 23: 445-452
https://doi.org/10.1140/epja/i2004-10100-3

Mechanism of the ¹²C(¹¹B,¹⁵N)⁸Be reaction and ⁸Be + ¹⁵N optical-model potential

¹ Institute for Nuclear Research, Prospect Nauki 47, 03680, Kiev, Ukraine
² H. Niewodniczański Institute of Nuclear Physics, ul. Radzikowskiego 152, PL-31-342, Cracow, Poland
³ Heavy Ion Laboratory of Warsaw University, ul. L. Pasteura 5A, PL-02-093, Warsaw, Poland
⁴ Institute of Applied Physics, MUT, ul. Kaliskiego 2, PL-00-908, Warsaw, Poland
⁵ Kharkiv National University, pl. Svobody 4, 61077, Kharkiv, Ukraine
⁶ University of Rzeszów, PL-35-959, Rzeszów, Poland
⁷ A. Soltan Institute for Nuclear Studies, ul. Hoża 69, PL-00-681, Warsaw, Poland

^* e-mail: Stanislaw.Kliczewski@ifj.edu.pl

Received: 21 April 2004
Accepted: 3 November 2004
Published online: 20 December 2004

Abstract

Angular distributions of the ¹²C( ¹¹B, ¹⁵N) ⁸Be reaction were measured at the energy E _lab(¹¹ B) = 49 MeV for the transitions to the ground and 2.94 MeV (2⁺) excited state of ⁸Be and to the ground and 5.270 MeV (5/2⁺) + 5.299 MeV (1/2⁺), 6.324 MeV (3/2^-), 7.155 MeV (5/2⁺) + 7.301 MeV (3/2⁺), 7.567 MeV (7/2⁺) excited states of ¹⁵N. The data were analyzed by the coupled-reaction-channel method. The elastic, inelastic scattering and one- and two-step transfers were included in the coupling scheme. The data of the ¹²C( ¹¹B, ⁸Be) ¹⁵N reaction at E _cm = 9.4-17.8 MeV known from the literature, were also included in the analysis. The mechanism of the ¹²C( ¹¹B, ¹⁵N) ⁸Be reaction and the optical-model potential parameters for the ¹⁵N + ⁸Be channel were deduced. The energy dependence of the optical-model parameters for the ¹⁵N + ⁸Be channel was obtained.