Magnetic Dipole Transition in

Acharya, B; Hu, B S; Bacca, S; Hagen, G; Navrátil, P; Papenbrock, T

Acharya, B; Hu, B S; Bacca, S; Hagen, G; Navrátil, P; Papenbrock, T.

Afiliación

Acharya B; Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Hu BS; Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Bacca S; National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Hagen G; Institut für Kernphysik and PRISMA+ Cluster of Excellence, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany.
Navrátil P; Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
Papenbrock T; Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

Phys Rev Lett ; 132(23): 232504, 2024 Jun 07.

Article en En | MEDLINE | ID: mdl-38905663

ABSTRACT

ABSTRACT

The magnetic dipole transition strength B(M1) of ^{48}Ca is dominated by a single resonant state at an excitation energy of 10.23 MeV. Experiments disagree about B(M1) and this impacts our understanding of spin flips in nuclei. We performed ab initio computations based on chiral effective field theory and found that B(M1 0^{+}â1^{+}) lies in the range from 7.0 to 10.2 µ_{N}^{2}. This is consistent with a (Î³,n) experiment but larger than results from (e,e^{'}) and (p,p^{'}) scattering. Two-body currents yield no quenching of the B(M1) strength and continuum effects reduce it by about 10%. For a validation of our approach, we computed magnetic moments in ^{47,49}Ca and performed benchmark calculations in light nuclei.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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