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Reply to “Comment on ‘Quantum-mechanical equivalent-photon spectrum for heavy ion physics”’

Charles J. Benesh, A. C. Hayes, J. L. Friar

Physical Review C, 1997

2 citations

Abstract

Shortcomings of a momentum-space treatment of strong absorption, as discussed in the preceding Comment, are only of concern at low projectile energies, $\ensuremath{\gamma}<1.5$. At intermediate and high energies, for which the quantum-mechanical equivalent-photon spectrum is intended, the quantum-mechanical cross sections are reduced relative to the semiclassical results whether one treats strong effects via a momentum-space or an impact-parameter (spatial) cutoff. At these energies the origin of the discrepancy between the predictions of fully quantum-mechanical and the semiclassical calculations cannot be traced to differences in the treatment of strong-interaction effects. Rather, they arise from quantum effects neglected in the semiclassical calculations.

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