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.

DOI: https://doi.org/10.1103/PhysRevC.94.034602

Abstract

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, S_L → V (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, S_L 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.

Viewing alternatives

Metrics

Item Actions

Export

You can export this page using these formats Digital Object Identifier - DOI