Abstract
We critically discuss the recently developed quantum-mechanical equivalent photon spectrum by Benesh et al. [Phys. Rev. C 54, 1404 (1996)]. We point out that the key point, the strong absorption in heavy ion collisions, is not treated adequately. Conclusions drawn from such a spectrum are invalid. Equivalent-photon spectra appropriate for heavy ions have been given before in quantal, as well as semiclassical versions, and were found to be very satisfactory.
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