Eur. Phys. J. A 15, 389-397 (2002)
DOI: 10.1140/epja/i2001-10221-1

-induced transfer reactions on

V. Jha¹, B.J. Roy^{1, 2}, A. Chatterjee¹, H.S. Patel¹, B. Srinivasan¹, M.G. Betigeri¹ and H. Machner<sup>2

1</sup>  Nuclear Physics Division, B. A. R. C., Mumbai-400085, India
²  Institut für Kernphysik, Forschungszentrum Jülich, Germany

b.roy@fz-juelich.de

(Received: 16 November 2001 / Revised version: 31 January 2002 / Published online: 19 November 2002)

Abstract
Cross-section for transfer reactions ⁹⁰Zr( ¹⁶O, X) have been measured at an incident energy of 90 MeV. The angular distribution of the elastic scattering ⁹⁰Zr( ¹⁶O, ¹⁶O) ⁹⁰Zr, the inelastic scattering to excited states of ⁹⁰Zr, the one-nucleon transfer reactions ⁹⁰Zr( ¹⁶O, ¹⁵N) ⁹¹Nb (g.s., 0.104 and 3.37 MeV states), ⁹⁰Zr( ¹⁶O, ¹⁵O) ⁹¹Zr (g.s. and 2.17 MeV state) ⁹⁰Zr( ¹⁶O, ¹⁷O) ⁹¹Zr (g.s.) and the two-nucleon transfer reactions ⁹⁰Zr( ¹⁶O, ¹⁴C) ⁹²Mo (ground and 1st excited states) are analyzed in the coupled-reaction-channel (CRC) formalism. Starting with a double-folded real potential, the elastic-scattering angular distribution is calculated using the CRC code FRESCO. The absorptive potential is then generated through the coupling of various inelastic and transfer processes that occur at the nuclear surface. Addition of a short-range imaginary potential in the coupling scheme, whose purpose was to take into account the effect due to loss of flux in fusion channel, reproduces the measured elastic-scattering angular distribution. A good description of all the quasi-elastic data has been achieved and the absolute magnitudes are reproduced without any arbitrary normalization. The relative importance of the one-step cluster transfer of two protons vs. the two-step successive transfer has been studied.

PACS
25.70.Hi - Transfer reactions.
25.70.Bc - Elastic and quasielastic scattering.

© Società Italiana di Fisica, Springer-Verlag 2002