Heavy-ion excitation of one- and two-phonon giant dipole states as an exit doorway phenomenon

We develop a detailed theory for multiphonon excitation in heavy-ion collisions. This theory fully accounts for the effects of the finite lifetimes of the states involved and allows the treatment of both formation and decay of multiphonon states through explicit consideration of spreading and escape...

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Veröffentlicht in:	Physical review letters 1994-04, Vol.72 (14), p.2147-2150
Hauptverfasser:	Canto, LF, Romanelli, A, Hussein, MS, de Toledo Piza AF
Format:	Artikel
Sprache:	eng
Schlagworte:	663300 > Nuclear Reactions & Scattering, General-- (1992-) CHARGED-PARTICLE REACTIONS CROSS SECTIONS DIMENSIONS ENERGY-LEVEL TRANSITIONS EXCITATION HEAVY ION REACTIONS LIFETIME NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS PHONONS QUASI PARTICLES 663450 > Heavy-Ion-Induced Reactions & Scattering-- (1992-) RESONANCE WIDTH
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container_end_page	2150
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container_title	Physical review letters
container_volume	72
creator	Canto, LF Romanelli, A Hussein, MS de Toledo Piza AF
description	We develop a detailed theory for multiphonon excitation in heavy-ion collisions. This theory fully accounts for the effects of the finite lifetimes of the states involved and allows the treatment of both formation and decay of multiphonon states through explicit consideration of spreading and escape widths. A schematic model is used to study the influence of the widths on the formation cross sections. We find that the finite width of the one-phonon resonance leads to a decrease in the two-phonon state cross section.
doi_str_mv	10.1103/PhysRevLett.72.2147
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subjects	663300 -- Nuclear Reactions & Scattering, General-- (1992-) CHARGED-PARTICLE REACTIONS CROSS SECTIONS DIMENSIONS ENERGY-LEVEL TRANSITIONS EXCITATION HEAVY ION REACTIONS LIFETIME NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS PHONONS QUASI PARTICLES 663450 -- Heavy-Ion-Induced Reactions & Scattering-- (1992-) RESONANCE WIDTH
title	Heavy-ion excitation of one- and two-phonon giant dipole states as an exit doorway phenomenon
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