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Evidence for L-dependence generated by channel coupling: 16O scattering from 12C at 115.9 MeV

Mackintosh, R. S. (2016). Evidence for L-dependence generated by channel coupling: 16O scattering from 12C at 115.9 MeV. Physical Review C, 94 pp. 1–9.

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Background: In earlier work, inversion of S matrix for 330 MeV 16O on 12C resulted in highly undulatory potentials; the S matrix resulted from the inclusion of strong coupling to states of projectile and target nuclei. L-independent S-matrix equivalent potentials for other explicitly L-dependent potentials have been found to be undulatory.

Purpose: To investigate the possible implications of the undulatory dynamic polarization potential for an underlying L dependence of the 16O on 12C optical potential.

Methods: S matrix to potential, SLV (r), inversion which yields local potentials that reproduce the elastic channel S matrix of coupled channel (CC) calculations, will be applied to the S matrix for 115.9 MeV 16O on 12C. Further, SL for explicitly L-dependent potentials are inverted and the resulting L-independent potentials are characterized and compared with the undulatory potentials found for 16O on 12C.

Results: Some of the undulatory features exhibited by the potentials modified by channel coupling for 115.9 MeV 16O on 12C can be simulated by simple parameterized L-dependent potentials.

Conclusions: The elastic scattering of 16O by 12C is a particularly favorable case for revealing the effective L dependence of the potential modified by channel coupling. Nevertheless, there is no reason to suppose that undularity is not a generic property leading in many cases to the choice: nucleus-nucleus potentials are (i) smooth and L-dependent, (ii) L-independent and undulatory, or (iii) both.

Item Type: Journal Item
Copyright Holders: 2016 American Physical Society
ISSN: 2469-9993
Extra Information: Keywords not required by PRC.
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 47452
Depositing User: Raymond Mackintosh
Date Deposited: 27 Sep 2016 14:52
Last Modified: 19 Jun 2020 21:47
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