The Experts below are selected from a list of 6840 Experts worldwide ranked by ideXlab platform
Stefan E. Schmidt - One of the best experts on this subject based on the ideXlab platform.
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New Nuclear Magnetic Moment of ^{209}Bi: Resolving the Bismuth Hyperfine Puzzle.
Physical review letters, 2018Co-Authors: Leonid V. Skripnikov, Stefan E. Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, B. Kresse, Wilfried Nörtershäuser, Alexei F. Privalov, Benjamin Scheibe, V. M. ShabaevAbstract:A recent measurement of the hyperfine splitting in the ground state of Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits a $7\ensuremath{\sigma}$ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated Nuclear Magnetic Moment (${\ensuremath{\mu}}_{I}$) of $^{209}\mathrm{Bi}$. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ and combine it with Nuclear Magnetic resonance measurements of $\mathrm{Bi}({\mathrm{NO}}_{3}{)}_{3}$ in nitric acid solutions and of the hexafluoridobismuthate(V) ${\mathrm{BiF}}_{6}^{\ensuremath{-}}$ ion in acetonitrile. The result clearly reveals that ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ is much smaller than the tabulated value used previously. Applying the new Magnetic Moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
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new Nuclear Magnetic Moment of 209 bi resolving the bismuth hyperfine puzzle
Physical Review Letters, 2018Co-Authors: Leonid V. Skripnikov, Stefan E. Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, B. Kresse, Wilfried Nörtershäuser, Alexei F. PrivalovAbstract:A recent measurement of the hyperfine splitting in the ground state of Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits a $7\ensuremath{\sigma}$ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated Nuclear Magnetic Moment (${\ensuremath{\mu}}_{I}$) of $^{209}\mathrm{Bi}$. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ and combine it with Nuclear Magnetic resonance measurements of $\mathrm{Bi}({\mathrm{NO}}_{3}{)}_{3}$ in nitric acid solutions and of the hexafluoridobismuthate(V) ${\mathrm{BiF}}_{6}^{\ensuremath{-}}$ ion in acetonitrile. The result clearly reveals that ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ is much smaller than the tabulated value used previously. Applying the new Magnetic Moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
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The Nuclear Magnetic Moment of 208Bi and its relevance for a test of bound-state strong-field QED
Physics Letters B, 2018Co-Authors: Stefan E. Schmidt, Wilfried Nörtershäuser, J. Billowes, Mark Bissell, Klaus Blaum, R. F. Garcia Ruiz, H. Heylen, S. Malbrunot-ettenauer, Gerda Neyens, G. PlunienAbstract:Abstract The hyperfine structure splitting in the 6 p 3 S 3 / 2 4 → 6 p 2 7 s P 1 / 2 4 transition at 307 nm in atomic 208Bi was measured with collinear laser spectroscopy at ISOLDE, CERN. The hyperfine A and B factors of both states were determined with an order of magnitude improved accuracy. Based on these measurements, theoretical input for the hyperfine structure anomaly, and results from hyperfine measurements on hydrogen-like and lithium-like 209Bi80+,82+, the Nuclear Magnetic Moment of 208Bi has been determined to μ ( Bi 208 ) = + 4.570 ( 10 ) μ N . Using this value, the transition energy of the ground-state hyperfine splitting in hydrogen-like and lithium-like 208Bi80+,82+ and their specific difference of −67.491(5)(148) meV are predicted. This provides a means for an experimental confirmation of the cancellation of Nuclear structure effects in the specific difference in order to exclude such contributions as the cause of the hyperfine puzzle, the recently reported 7-σ discrepancy between experiment and bound-state strong-field QED calculations of the specific difference in the hyperfine structure splitting of 209Bi80+,82+.
Wilfried Nörtershäuser - One of the best experts on this subject based on the ideXlab platform.
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New Nuclear Magnetic Moment of ^{209}Bi: Resolving the Bismuth Hyperfine Puzzle.
Physical review letters, 2018Co-Authors: Leonid V. Skripnikov, Stefan E. Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, B. Kresse, Wilfried Nörtershäuser, Alexei F. Privalov, Benjamin Scheibe, V. M. ShabaevAbstract:A recent measurement of the hyperfine splitting in the ground state of Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits a $7\ensuremath{\sigma}$ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated Nuclear Magnetic Moment (${\ensuremath{\mu}}_{I}$) of $^{209}\mathrm{Bi}$. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ and combine it with Nuclear Magnetic resonance measurements of $\mathrm{Bi}({\mathrm{NO}}_{3}{)}_{3}$ in nitric acid solutions and of the hexafluoridobismuthate(V) ${\mathrm{BiF}}_{6}^{\ensuremath{-}}$ ion in acetonitrile. The result clearly reveals that ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ is much smaller than the tabulated value used previously. Applying the new Magnetic Moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
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new Nuclear Magnetic Moment of 209 bi resolving the bismuth hyperfine puzzle
Physical Review Letters, 2018Co-Authors: Leonid V. Skripnikov, Stefan E. Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, B. Kresse, Wilfried Nörtershäuser, Alexei F. PrivalovAbstract:A recent measurement of the hyperfine splitting in the ground state of Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits a $7\ensuremath{\sigma}$ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated Nuclear Magnetic Moment (${\ensuremath{\mu}}_{I}$) of $^{209}\mathrm{Bi}$. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ and combine it with Nuclear Magnetic resonance measurements of $\mathrm{Bi}({\mathrm{NO}}_{3}{)}_{3}$ in nitric acid solutions and of the hexafluoridobismuthate(V) ${\mathrm{BiF}}_{6}^{\ensuremath{-}}$ ion in acetonitrile. The result clearly reveals that ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ is much smaller than the tabulated value used previously. Applying the new Magnetic Moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
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The Nuclear Magnetic Moment of 208Bi and its relevance for a test of bound-state strong-field QED
Physics Letters B, 2018Co-Authors: Stefan E. Schmidt, Wilfried Nörtershäuser, J. Billowes, Mark Bissell, Klaus Blaum, R. F. Garcia Ruiz, H. Heylen, S. Malbrunot-ettenauer, Gerda Neyens, G. PlunienAbstract:Abstract The hyperfine structure splitting in the 6 p 3 S 3 / 2 4 → 6 p 2 7 s P 1 / 2 4 transition at 307 nm in atomic 208Bi was measured with collinear laser spectroscopy at ISOLDE, CERN. The hyperfine A and B factors of both states were determined with an order of magnitude improved accuracy. Based on these measurements, theoretical input for the hyperfine structure anomaly, and results from hyperfine measurements on hydrogen-like and lithium-like 209Bi80+,82+, the Nuclear Magnetic Moment of 208Bi has been determined to μ ( Bi 208 ) = + 4.570 ( 10 ) μ N . Using this value, the transition energy of the ground-state hyperfine splitting in hydrogen-like and lithium-like 208Bi80+,82+ and their specific difference of −67.491(5)(148) meV are predicted. This provides a means for an experimental confirmation of the cancellation of Nuclear structure effects in the specific difference in order to exclude such contributions as the cause of the hyperfine puzzle, the recently reported 7-σ discrepancy between experiment and bound-state strong-field QED calculations of the specific difference in the hyperfine structure splitting of 209Bi80+,82+.
G. Plunien - One of the best experts on this subject based on the ideXlab platform.
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The Nuclear Magnetic Moment of 208Bi and its relevance for a test of bound-state strong-field QED
Physics Letters B, 2018Co-Authors: Stefan E. Schmidt, Wilfried Nörtershäuser, J. Billowes, Mark Bissell, Klaus Blaum, R. F. Garcia Ruiz, H. Heylen, S. Malbrunot-ettenauer, Gerda Neyens, G. PlunienAbstract:Abstract The hyperfine structure splitting in the 6 p 3 S 3 / 2 4 → 6 p 2 7 s P 1 / 2 4 transition at 307 nm in atomic 208Bi was measured with collinear laser spectroscopy at ISOLDE, CERN. The hyperfine A and B factors of both states were determined with an order of magnitude improved accuracy. Based on these measurements, theoretical input for the hyperfine structure anomaly, and results from hyperfine measurements on hydrogen-like and lithium-like 209Bi80+,82+, the Nuclear Magnetic Moment of 208Bi has been determined to μ ( Bi 208 ) = + 4.570 ( 10 ) μ N . Using this value, the transition energy of the ground-state hyperfine splitting in hydrogen-like and lithium-like 208Bi80+,82+ and their specific difference of −67.491(5)(148) meV are predicted. This provides a means for an experimental confirmation of the cancellation of Nuclear structure effects in the specific difference in order to exclude such contributions as the cause of the hyperfine puzzle, the recently reported 7-σ discrepancy between experiment and bound-state strong-field QED calculations of the specific difference in the hyperfine structure splitting of 209Bi80+,82+.
Leonid V. Skripnikov - One of the best experts on this subject based on the ideXlab platform.
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New Nuclear Magnetic Moment of ^{209}Bi: Resolving the Bismuth Hyperfine Puzzle.
Physical review letters, 2018Co-Authors: Leonid V. Skripnikov, Stefan E. Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, B. Kresse, Wilfried Nörtershäuser, Alexei F. Privalov, Benjamin Scheibe, V. M. ShabaevAbstract:A recent measurement of the hyperfine splitting in the ground state of Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits a $7\ensuremath{\sigma}$ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated Nuclear Magnetic Moment (${\ensuremath{\mu}}_{I}$) of $^{209}\mathrm{Bi}$. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ and combine it with Nuclear Magnetic resonance measurements of $\mathrm{Bi}({\mathrm{NO}}_{3}{)}_{3}$ in nitric acid solutions and of the hexafluoridobismuthate(V) ${\mathrm{BiF}}_{6}^{\ensuremath{-}}$ ion in acetonitrile. The result clearly reveals that ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ is much smaller than the tabulated value used previously. Applying the new Magnetic Moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
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new Nuclear Magnetic Moment of 209 bi resolving the bismuth hyperfine puzzle
Physical Review Letters, 2018Co-Authors: Leonid V. Skripnikov, Stefan E. Schmidt, Johannes Ullmann, Christopher Geppert, Florian Kraus, B. Kresse, Wilfried Nörtershäuser, Alexei F. PrivalovAbstract:A recent measurement of the hyperfine splitting in the ground state of Li-like ${^{208}\mathrm{Bi}}^{80+}$ has established a ``hyperfine puzzle''---the experimental result exhibits a $7\ensuremath{\sigma}$ deviation from the theoretical prediction [J. Ullmann et al., Nat. Commun. 8, 15484 (2017); J. P. Karr, Nat. Phys. 13, 533 (2017)]. We provide evidence that the discrepancy is caused by an inaccurate value of the tabulated Nuclear Magnetic Moment (${\ensuremath{\mu}}_{I}$) of $^{209}\mathrm{Bi}$. We perform relativistic density functional theory and relativistic coupled cluster calculations of the shielding constant that should be used to extract the value of ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ and combine it with Nuclear Magnetic resonance measurements of $\mathrm{Bi}({\mathrm{NO}}_{3}{)}_{3}$ in nitric acid solutions and of the hexafluoridobismuthate(V) ${\mathrm{BiF}}_{6}^{\ensuremath{-}}$ ion in acetonitrile. The result clearly reveals that ${\ensuremath{\mu}}_{I}(^{209}\mathrm{Bi})$ is much smaller than the tabulated value used previously. Applying the new Magnetic Moment shifts the theoretical prediction into agreement with experiment and resolves the hyperfine puzzle.
J. Billowes - One of the best experts on this subject based on the ideXlab platform.
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The Nuclear Magnetic Moment of 208Bi and its relevance for a test of bound-state strong-field QED
Physics Letters B, 2018Co-Authors: Stefan E. Schmidt, Wilfried Nörtershäuser, J. Billowes, Mark Bissell, Klaus Blaum, R. F. Garcia Ruiz, H. Heylen, S. Malbrunot-ettenauer, Gerda Neyens, G. PlunienAbstract:Abstract The hyperfine structure splitting in the 6 p 3 S 3 / 2 4 → 6 p 2 7 s P 1 / 2 4 transition at 307 nm in atomic 208Bi was measured with collinear laser spectroscopy at ISOLDE, CERN. The hyperfine A and B factors of both states were determined with an order of magnitude improved accuracy. Based on these measurements, theoretical input for the hyperfine structure anomaly, and results from hyperfine measurements on hydrogen-like and lithium-like 209Bi80+,82+, the Nuclear Magnetic Moment of 208Bi has been determined to μ ( Bi 208 ) = + 4.570 ( 10 ) μ N . Using this value, the transition energy of the ground-state hyperfine splitting in hydrogen-like and lithium-like 208Bi80+,82+ and their specific difference of −67.491(5)(148) meV are predicted. This provides a means for an experimental confirmation of the cancellation of Nuclear structure effects in the specific difference in order to exclude such contributions as the cause of the hyperfine puzzle, the recently reported 7-σ discrepancy between experiment and bound-state strong-field QED calculations of the specific difference in the hyperfine structure splitting of 209Bi80+,82+.
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The Nuclear Magnetic Moment of ? by atomic beam laser spectroscopy
Journal of Physics G: Nuclear and Particle Physics, 1996Co-Authors: T. G. Cooper, J. Billowes, Paul Campbell, M.r. PearsonAbstract:The Magnetic dipole Moment has been deduced for the Nuclear ground state of the self-conjugate nucleus from the hyperfine splitting of the atomic ground state. The hyperfine structure of the 308.2 nm transition was measured by laser resonance fluorescence of an atomic beam. The tunable ultraviolet light was generated by frequency doubling using a lithium iodate crystal within the cavity of a dye laser. The result of fits well with the systematics of neighbouring -subshell nuclei and its small difference from the pure Schmidt value is satisfactorily described by a shell-model calculation in the full 2s1d shell.
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the Nuclear Magnetic Moment of by atomic beam laser spectroscopy
Journal of Physics G, 1996Co-Authors: T. G. Cooper, J. Billowes, Paul Campbell, M.r. PearsonAbstract:The Magnetic dipole Moment has been deduced for the Nuclear ground state of the self-conjugate nucleus from the hyperfine splitting of the atomic ground state. The hyperfine structure of the 308.2 nm transition was measured by laser resonance fluorescence of an atomic beam. The tunable ultraviolet light was generated by frequency doubling using a lithium iodate crystal within the cavity of a dye laser. The result of fits well with the systematics of neighbouring -subshell nuclei and its small difference from the pure Schmidt value is satisfactorily described by a shell-model calculation in the full 2s1d shell.
