Magnetism of an excited self-conjugate nucleus: Precise measurement of the G factor of the 21+ state in MG 24

A. Kusoglu; A. E. Stuchbery; G. Georgiev; B. A. 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

doi:10.1103/PhysRevLett.114.062501

Magnetism of an excited self-conjugate nucleus: Precise measurement of the G factor of the 21+ state in MG 24

A. Kusoglu, A. E. Stuchbery^*, G. Georgiev, B. A. 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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus Mg24 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.

Original language	English
Article number	062501
Journal	Physical Review Letters
Volume	114
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.114.062501
Publication status	Published - 12 Feb 2015

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Kusoglu, A., Stuchbery, A. E., Georgiev, G., Brown, B. A., Goasduff, A., Atanasova, L., Balabanski, D. L., Bostan, M., Danchev, M., Detistov, P., Gladnishki, K. A., Ljungvall, J., Matea, I., Radeck, D., Sotty, C., Stefan, I., Verney, D., & Yordanov, D. T. (2015). Magnetism of an excited self-conjugate nucleus: Precise measurement of the G factor of the 21+ state in MG 24. Physical Review Letters, 114(6), Article 062501. https://doi.org/10.1103/PhysRevLett.114.062501

@article{5d55381e5e894de5bf90b22ecef3e508,

title = "Magnetism of an excited self-conjugate nucleus: Precise measurement of the G factor of the 21+ state in MG 24",

abstract = "A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus Mg24 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.",

author = "A. Kusoglu and Stuchbery, {A. E.} and G. Georgiev and Brown, {B. A.} and A. Goasduff and L. Atanasova and Balabanski, {D. L.} and M. Bostan and M. Danchev and P. Detistov and Gladnishki, {K. A.} and J. Ljungvall and I. Matea and D. Radeck and C. Sotty and I. Stefan and D. Verney and Yordanov, {D. T.}",

note = "Publisher Copyright: {\textcopyright} 2014 Published by the American Physical Society.",

year = "2015",

month = feb,

day = "12",

doi = "10.1103/PhysRevLett.114.062501",

language = "English",

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issn = "0031-9007",

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Kusoglu, A, Stuchbery, AE, Georgiev, G, Brown, BA, Goasduff, A, Atanasova, L, Balabanski, DL, Bostan, M, Danchev, M, Detistov, P, Gladnishki, KA, Ljungvall, J, Matea, I, Radeck, D, Sotty, C, Stefan, I, Verney, D & Yordanov, DT 2015, 'Magnetism of an excited self-conjugate nucleus: Precise measurement of the G factor of the 21+ state in MG 24', Physical Review Letters, vol. 114, no. 6, 062501. https://doi.org/10.1103/PhysRevLett.114.062501

TY - JOUR

T1 - Magnetism of an excited self-conjugate nucleus

T2 - Precise measurement of the G factor of the 21+ state in MG 24

AU - Kusoglu, A.

AU - Stuchbery, A. E.

AU - Georgiev, G.

AU - Brown, B. A.

AU - Goasduff, A.

AU - Atanasova, L.

AU - Balabanski, D. L.

AU - Bostan, M.

AU - Danchev, M.

AU - Detistov, P.

AU - Gladnishki, K. A.

AU - Ljungvall, J.

AU - Matea, I.

AU - Radeck, D.

AU - Sotty, C.

AU - Stefan, I.

AU - Verney, D.

AU - Yordanov, D. T.

PY - 2015/2/12

Y1 - 2015/2/12

N2 - A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus Mg24 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.

AB - A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus Mg24 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.

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DO - 10.1103/PhysRevLett.114.062501

M3 - Article

SN - 0031-9007

VL - 114

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 062501

ER -

Magnetism of an excited self-conjugate nucleus: Precise measurement of the G factor of the 21+ state in MG 24

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