Magnetic Moments of Short-Lived Nuclei with Part-per-Million Accuracy: Toward Novel Applications of β-Detected NMR in Physics, Chemistry, and Biology

We determine for the first time the magnetic dipole moment of a short-lived nucleus with part-per-million (ppm) accuracy. To achieve this 2-orders-of-magnitude improvement over previous studies, we implement a number of innovations into our β-detected nuclear magnetic resonance (β-NMR) setup at ISOL...

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Autores principales: R. D. Harding, S. Pallada, J. Croese, A. Antušek, M. Baranowski, M. L. Bissell, L. Cerato, K. M. Dziubinska-Kühn, W. Gins, F. P. Gustafsson, A. Javaji, R. B. Jolivet, A. Kanellakopoulos, B. Karg, M. Kempka, V. Kocman, M. Kozak, K. Kulesz, M. Madurga Flores, G. Neyens, R. Pietrzyk, J. Plavec, M. Pomorski, A. Skrzypczak, P. Wagenknecht, F. Wienholtz, J. Wolak, Z. Xu, D. Zakoucky, M. Kowalska
Formato: article
Lenguaje:EN
Publicado: American Physical Society 2020
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Acceso en línea:https://doaj.org/article/6378998f8fbd4beca59fc6701456b6bb
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Sumario:We determine for the first time the magnetic dipole moment of a short-lived nucleus with part-per-million (ppm) accuracy. To achieve this 2-orders-of-magnitude improvement over previous studies, we implement a number of innovations into our β-detected nuclear magnetic resonance (β-NMR) setup at ISOLDE at CERN. Using liquid samples as hosts, we obtain narrow, subkilohertz-linewidth, resonances, while a simultaneous in situ ^{1}H NMR measurement allows us to calibrate and stabilize the magnetic field to ppm precision, thus eliminating the need for additional β-NMR reference measurements. Furthermore, we use ab initio calculations of NMR shielding constants to improve the accuracy of the reference magnetic moment, thus removing a large systematic error. We demonstrate the potential of this combined approach with the 1.1 s half-life radioactive nucleus ^{26}Na, which is relevant for biochemical studies. Our technique can be readily extended to other isotopic chains, providing accurate magnetic moments for many short-lived nuclei. Furthermore, we discuss how our approach can open the path toward a wide range of applications of the ultrasensitive β-NMR in physics, chemistry, and biology.