Probing the quantum-mechanical equivalent-photon spectrum for electromagnetic dissociation of relativistic uranium projectiles

Abstract

Electromagnetic fission cross sections for the reactions U + (Be, C, Al, Cu, In, Au, U) at E/A = 0.6 and 1.0 GeV are compared to theoretical calculations using recently proposed quantum-mechanical equivalent-photon spectra. In contrast to semi-classical calculations, systematically lower cross sections are obtained that cannot reproduce the experimental results. Furthermore, we point out that the study of electromagnetic fission cross sections or electromagnetic 1-neutron removal cross sections alone cannot provide unambiguous information on the excitation of the double giant dipole resonance.

4 pages, TeX, psfig, also available at http://csa5.lbl.gov/moretto/ps/emd_qm.ps, submitted to Phys. Rev. C

References in corpus (5)

• Universality of Spectator Fragmentation at Relativistic Bombarding Energies
• A Quantum-Mechanical Equivalent-Photon Spectrum for Heavy-Ion Physics
• Comment on "A Quantum-Mechanical Equivalent-Photon Spectrum for Heavy Ion Physics"
• Simultaneous Projectile-Target Excitation in Heavy Ion Collisions
• Electromagnetic Dissociation of Nuclei in Heavy-Ion Collisions

Cited by in corpus (2)

• Coherent gamma-gamma and gamma-A interactions in very peripheral collisions at relativistic ion colliders
• Electromagnetic Dissociation as a Tool for Nuclear Structure and Astrophysics