[Noyaux moléculaires]
Les noyaux riches en neutrons semblent présenter des états analogues aux molécules atomiques. En particulier, une sous-strucuture en particules α de noyaux légers riches en neutrons tels les Bérylium et des Carbones pourrait créer un potentiel à plusieurs centres piègeant des neutrons de valence. Cet article fait le point sur les fonctions d'onde de ces états moléculaires et sur leur lien avec les orbites de Nilson et de l'oscillateur harmonique déformé. Les preuves expérimentales de l'existence d'états nucléaires agréés en molécules est passé en revue avec un point particulier sur les informations spectroscopiques provenant de la mesure de leur canaux de désintégration.
The possible existence of analogues of atomic molecules within nuclei is considered in the context of the neutron-rich beryllium and carbon isotopes, where the underlying α cluster structure is believed to produce a multi-centred potential in which valence neutrons move. The generation of molecular wave-functions is examined and the link with the deformed harmonic oscillator and the Nilsson single-particle level scheme traced. Experimental evidence for the existence of molecular exotic cluster structures is reviewed particularly the nature of spectroscopic information provided by break-up reaction measurements.
Mots-clés : Noyaux moléculaires, Noyaux légers riches en neutrons, Canaux de désintégration
Martin Freer 1
@article{CRPHYS_2003__4_4-5_475_0,
author = {Martin Freer},
title = {Molecules in nuclei},
journal = {Comptes Rendus. Physique},
pages = {475--487},
publisher = {Elsevier},
volume = {4},
number = {4-5},
year = {2003},
doi = {10.1016/S1631-0705(03)00050-1},
language = {en},
}
Martin Freer. Molecules in nuclei. Comptes Rendus. Physique, Volume 4 (2003) no. 4-5, pp. 475-487. doi : 10.1016/S1631-0705(03)00050-1. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/S1631-0705(03)00050-1/
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