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

KUSOGLU, Aslı; Stuchbery, A.; GEORGIEV, G.; Brown, B.; GOASDUFF, A.; ATANASOVA, L.; BALABANSKI, D.; Bostan, İsmail; DANCHEV, M.; Detistov, P.; GLADNISHKI, K.; LJUNGVALL, J.; MATEA, I.; RADECK, D.; SOTTY, C.; STEFAN, I.; VERNEY, D.; YORDANOV, D.

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

Atıf İçin Kopyala

KUSOGLU A., Stuchbery A. E., GEORGIEV G., Brown B. A., GOASDUFF A., ATANASOVA L., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.114, sa.6, 2015 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 114 Sayı: 6
Basım Tarihi: 2015
Doi Numarası: 10.1103/physrevlett.114.062501
Dergi Adı: PHYSICAL REVIEW LETTERS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
İstanbul Üniversitesi Adresli: Evet

Özet

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.