2001
DOI: 10.1103/physrevc.64.064605
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Anharmonicities of giant dipole excitations

Abstract: The role of anharmonic effects on the excitation of the double giant dipole resonance is investigated in a simple macroscopic model.Perturbation theory is used to find energies and wave functions of the anharmonic ascillator.The cross sections for the electromagnetic excitation of the one- and two-phonon giant dipole resonances in energetic heavy-ion collisions are then evaluated through a semiclassical coupled-channel calculation.It is argued that the variations of the strength of the anharmonic potential sho… Show more

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Cited by 7 publications
(4 citation statements)
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“…This is shown in Figure 3(b) where the dashed lines are the result of theoretical calculations [29,30,50,51,52,53,54]. These experiments are promising for the studies of the nuclear response in very collective states.…”
Section: Low Energy Photonuclear Interactionsmentioning
confidence: 82%
“…This is shown in Figure 3(b) where the dashed lines are the result of theoretical calculations [29,30,50,51,52,53,54]. These experiments are promising for the studies of the nuclear response in very collective states.…”
Section: Low Energy Photonuclear Interactionsmentioning
confidence: 82%
“…Raw materials are the main expense in production costs. [18][19][20] Therefore, using inexpensive raw materials and developing high-yield bacterial strains are very important for producing PHBV. Aragão et al evaluated the production efficiency of PHBV by Cupriavidus necator with control of nitrogen concentration.…”
Section: Introductionmentioning
confidence: 99%
“…For example, in the study of giant resonances, one must take account of the spreading of the resonance amongst the background states (see, e.g., refs. [5,8,18,19,20,21]), and the anharmonicity of the oscillation [4,6,22,23,24]. Of course, these studies also must incorporate the interaction of the nuclear motion with the electromagnetic pulse, and this is generally done by means of the Born approximataion and/or the the LWLA.…”
Section: Introductionmentioning
confidence: 99%