Magnetism of an Excited Self-Conjugate Nucleus: Precise Measurement of the g Factor of the 2(1)(+) State in Mg-24

A.E Stuchbery G. Georgiev 1 B. Brown A. Goasduff 1 L. Atanasova D.L. Balabanski M. Bostan M. Danchev P. Detistov K.A. Gladnishki J. Ljungvall 1 I. Matea 2 D. Radeck C. Sotty 1 I. Stefan 2 D. Verney 2 D.T. Yordanov 2 A. Kusoglu
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
2 IPNO - Institut de Physique Nucléaire d'Orsay
Abstract : A precise measurement of the g factor of the first-excited state in the self-conjugate (N = Z) nucleus Mg-24 is performed by a new time-differential recoil-in-vacuum method based on the hyperfine field of hydrogenlike ions. Theory predicts that the g factors of such states, in which protons and neutrons occupy the same orbits, should depart from 0.5 by a few percent due to configuration mixing and meson-exchange effects. The experimental result, g = 0.538 +/- 0.013, is in excellent agreement with recent shell-model calculations and shows a departure from 0.5 by almost 3 standard deviations, thus achieving, for the first time, the precision and accuracy needed to test theory. Proof of the new method opens the way for wide applications including measurements of the magnetism of excited states of exotic nuclei produced as radioactive beams.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2015, 114 (Issue 6), pp.062501. 〈10.1103/PhysRevLett.114.062501〉
Liste complète des métadonnées
http://hal.in2p3.fr/in2p3-01136183
Contributeur : Emilie Bonnardel <>
Soumis le : mercredi 1 avril 2015 - 10:54:11
Dernière modification le : jeudi 11 janvier 2018 - 06:26:24

Lien texte intégral

openaccess

Identifiants

Collections

IN2P3 | CSNSM | IPNO | UNIV-PARIS-SACLAY

Citation

A.E Stuchbery, G. Georgiev, B. Brown, A. Goasduff, L. Atanasova, et al.. Magnetism of an Excited Self-Conjugate Nucleus: Precise Measurement of the g Factor of the 2(1)(+) State in Mg-24. Physical Review Letters, American Physical Society, 2015, 114 (Issue 6), pp.062501. 〈10.1103/PhysRevLett.114.062501〉. 〈in2p3-01136183〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

96

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD