Coulomb excitation of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mo>|</mml:mo></mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mi>z</mml:mi></mml:msub><mml:mrow><mml:mo>|</mml:mo><mml:mo>=</mml:mo></mml:mrow><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:mrow><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mrow><mml:mi>A</mml:mi><mml:mo>=</mml:mo><mml:mn>23</mml:mn></mml:mrow></mml:math> mirror pair
نویسندگان
چکیده
Background: Electric-quadrupole ($E2$) strengths relate to the underlying quadrupole deformation of a nucleus and present challenge for many nuclear theories. Mirror nuclei in vicinity line $N=Z$ represent convenient laboratory testing deficiencies such models, making use isospin-symmetry systems. Purpose: Uncertainties associated with literature $E2$ \textsuperscript{23}Mg are some largest $T_z=\left|\frac{1}{2}\right|$ $sd$-shell. The purpose work is improve precision which these values known, enable better comparison theoretical models. Methods: Coulomb-excitation measurements $^{23}$Mg $^{23}$Na were performed at TRIUMF-ISAC facility using TIGRESS spectrometer. They used determine matrix elements mixed $E2$/$M1$ transitions. Results: Reduced transition strengths, $B(E2)$, extracted \textsuperscript{23}Na. Their was improved by factors approximately six both isotopes, while agreeing within uncertainties previous measurements. Conclusions: A made shell-model {\it ab initio} valence-space in-medium similarity renormalization group calculations. Valence-space similarity-renormalization-group calculations found underpredict absolute strength - agreement studies.
منابع مشابه
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2022
ISSN: ['2470-0002', '2469-9985', '2469-9993']
DOI: https://doi.org/10.1103/physrevc.105.034332