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; B. Brown; A. Goasduff; L. Atanasova; D.L. Balabanski; M. Bostan; M. Danchev; P. Detistov; K.A. Gladnishki; J. Ljungvall; I. Matea; D. Radeck; C. Sotty; I. Stefan; D. Verney; D.T. Yordanov; A. Kusoglu

doi:10.1103/PhysRevLett.114.062501

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〉

Domaine :

Physique [physics] / Physique Nucléaire Expérimentale [nucl-ex]

Physique [physics]

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

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

Lien texte intégral

Identifiants

Collections

Citation

Exporter

Métriques

99

Contact

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

Lien texte intégral

Identifiants

Collections

Citation

Exporter

Partager

Métriques

99

Contact