Abstract
Several phenomena are discussed which can affect the properties of the Giant Dipole Resonance (GDR) built on excited states. The effect of the N over Z ratio in the entrance channel is proposed to be studied to demonstrate that the saturation of the GDR strength is not due to preequilibrium effects. Two alternative explanations are discussed. The first one is based on the idea that the finite life time of the compound nucleus gives a finite width for any of the compound nucleus levels. The second explanation relies on the fact that each individual particle emission induces a strong fluctuation of the dipole moment of the nucleus. Therefore, the description of the dipole collective variable is asking to the problem of a Brownian motion in an harmonic potential. (K.A.) 17 refs.; 14 figs.
Citation Formats
Chomaz, Ph.
Hot giant dipole resonances.
France: N. p.,
1993.
Web.
Chomaz, Ph.
Hot giant dipole resonances.
France.
Chomaz, Ph.
1993.
"Hot giant dipole resonances."
France.
@misc{etde_10137109,
title = {Hot giant dipole resonances}
author = {Chomaz, Ph}
abstractNote = {Several phenomena are discussed which can affect the properties of the Giant Dipole Resonance (GDR) built on excited states. The effect of the N over Z ratio in the entrance channel is proposed to be studied to demonstrate that the saturation of the GDR strength is not due to preequilibrium effects. Two alternative explanations are discussed. The first one is based on the idea that the finite life time of the compound nucleus gives a finite width for any of the compound nucleus levels. The second explanation relies on the fact that each individual particle emission induces a strong fluctuation of the dipole moment of the nucleus. Therefore, the description of the dipole collective variable is asking to the problem of a Brownian motion in an harmonic potential. (K.A.) 17 refs.; 14 figs.}
place = {France}
year = {1993}
month = {Dec}
}
title = {Hot giant dipole resonances}
author = {Chomaz, Ph}
abstractNote = {Several phenomena are discussed which can affect the properties of the Giant Dipole Resonance (GDR) built on excited states. The effect of the N over Z ratio in the entrance channel is proposed to be studied to demonstrate that the saturation of the GDR strength is not due to preequilibrium effects. Two alternative explanations are discussed. The first one is based on the idea that the finite life time of the compound nucleus gives a finite width for any of the compound nucleus levels. The second explanation relies on the fact that each individual particle emission induces a strong fluctuation of the dipole moment of the nucleus. Therefore, the description of the dipole collective variable is asking to the problem of a Brownian motion in an harmonic potential. (K.A.) 17 refs.; 14 figs.}
place = {France}
year = {1993}
month = {Dec}
}