APS » PROLA » Phys. Rev. C » Volume 57 » Issue 4

Phys. Rev. C 57, 1797 - 1802 (1998)

Pronounced Airy structure in elastic 16O+12C scattering at Elab=132 MeV

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A. A. Ogloblin1, Dao T. Khoa2, Y. Kondō3,4, Yu. A. Glukhov1, A. S. Dem’yanova1, M. V. Rozhkov1, G. R. Satchler5,6, and S. A. Goncharov7
1RRC Kurchatov Institute, 123182 Moscow, Russia
2Department of Physics, Chung Yuan Christian University, Chung Li, Taiwan 32023, Republic of China
3Department of Natural Sciences, Kyoto Women’s University, 35 Kitahiyoshi-cho, Imakumano, Higashiyama-ku, Kyoto 605, Japan
4Department of Theoretical Physics, RSPhysSE, The Australian National University, Canberra, ACT 0200, Australia
5Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6373
6Department of Physics & Astronomy, University of Tennessee, Knoxville, Tennessee 37996
7Nuclear Physics Institute, Moscow State University, Moscow, Russia

Received 24 November 1997

Measurement of elastic 16O+12C scattering at Elab=132 MeV has been performed over the angular range 6°<Θc.m.<125°, which covers both the diffractive and refractive regions. A prominent minimum has been observed at Θc.m.≈86°, which can be identified as an Airy minimum preceding the rainbow maximum. It thus provides the first clear experimental evidence for the refractive (rainbow) scattering pattern in the 16O+12C system. This Airy structure can be well described by discrete sets of optical potentials with a relatively weak absorption and a deep real potential. Candidates for the realistic family of 16O+12C optical potentials at Elab=132 MeV are discussed; those include the semimicroscopic potential given by the double-folding model.


©1998 The American Physical Society

URL: http://link.aps.org/abstract/PRC/v57/p1797
DOI: 10.1103/PhysRevC.57.1797
PACS: 25.70.Bc, 24.10.Ht, 21.30.Fe

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