The role of E1-E2 interplay in multiphonon Coulomb excitation

Details The role of E1-E2 interplay in multiphonon Coulomb excitation The role of E1-E2 interplay in multiphonon Coulomb excitation

2003-01-19

arxiv.org/abs/nucl-th/0301057v1

Phys.Rev. C66 (2002) 044604

Physics

Nuclear Physics

Nuclear Theory

10 pages, 6 figures

Scientific paper

10.1103/PhysRevC.66.044604

In this work we study the problem of a charged particle, bound in a harmonic-oscillator potential, being excited by the Coulomb field from a fast charged projectile. Based on a classical solution to the problem and using the squeezed-state formalism we are able to treat exactly both dipole and quadrupole Coulomb field components. Addressing various transition amplitudes and processes of multiphonon excitation we study different aspects resulting from the interplay between E1 and E2 fields, ranging from classical dynamic polarization effects to questions of quantum interference. We compare exact calculations with approximate methods. Results of this work and the formalism we present can be useful in studies of nuclear reaction physics and in atomic stopping theory.

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