< Terug naar vorige pagina
Publicatie
Nuclear Charge Radius of 26mAl and Its Implication for Vud in the Quark Mixing Matrix
Tijdschriftbijdrage - Tijdschriftartikel
Collinear laser spectroscopy was performed on the isomer of the aluminium isotope ^{26m}Al. The measured isotope shift to ^{27}Al in the 3s^{2}3p ^{2}P_{3/2}^{○}→3s^{2}4s ^{2}S_{1/2} atomic transition enabled the first experimental determination of the nuclear charge radius of ^{26m}Al, resulting in R_{c}=3.130(15) fm. This differs by 4.5 standard deviations from the extrapolated value used to calculate the isospin-symmetry breaking corrections in the superallowed β decay of ^{26m}Al. Its corrected Ft value, important for the estimation of V_{ud} in the Cabibbo-Kobayashi-Maskawa matrix, is thus shifted by 1 standard deviation to 3071.4(1.0) s.
Tijdschrift: Physical Review Letters
ISSN: 0031-9007
Issue: 22
Volume: 131
Jaar van publicatie:2023
Trefwoorden:Multidisciplinaire natuurkunde
Toegankelijkheid:Open