The Experts below are selected from a list of 99768 Experts worldwide ranked by ideXlab platform
Jianguo Wang - One of the best experts on this subject based on the ideXlab platform.
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reevaluation of the nuclear electric quadrupole moment for 87 sr by hyperfine structures and relativistic Atomic Theory
Physical Review A, 2019Co-Authors: Tingxian Zhang, Hong Chang, Jianguo WangAbstract:The values of nuclear electric quadrupole moment are different by about 7% for 87Sr nucleus between the recommended value [N. J. Stone, At. Data Nucl. Data Tables 111-112, 1 (2016); P. Pyykko, Mol. Phys. 116, 1328 (2018)] and earlier results [e.g. A. M. Matensson-Pendrill, J. Phys. B: At. Mol. Opt. Phys. 35, 917 (2002); K. Z. Yu et al., Phys. Rev. A 70, 012506 (2004)]. In this work, we reported a new value, Q(87Sr) = 328(4) mb, making use of our calculated electric field gradients produced by electrons at nucleus in combination with experimental values for hyperfine structures of the 5s5p 3P1,2 states of the neutral Sr atom. In the framework of the multi-configuration Dirac-Hartree-Fock Theory, the electron correlations were taken into account systematically so as to control the uncertainties of the electric field gradient at about 1% level. The present result is different from the recommended value, but in excellent agreement with those by Matensson-Pendrill and Yu et al.. We would recommend the present Q value as a reference for 87Sr.
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reevaluation of the nuclear electric quadrupole moment for sr 87 by hyperfine structures and relativistic Atomic Theory
Physical Review A, 2019Co-Authors: Tingxian Zhang, Hong Chang, Jianguo WangAbstract:The values of the nuclear electric quadrupole moment are different by about 7% for the $^{87}\mathrm{Sr}$ nucleus between the recommended value [Stone, At. Data Nucl. Data Tables 111-112, 1 (2016); Pyykk\"o, Mol. Phys. 116, 1328 (2018)] and earlier results [e.g., M\aa{}rtensson-Pendrill, J. Phys. B 35, 917 (2002); Yu, Wu, Gou, and Shi, Phys. Rev. A 70, 012506 (2004)]. In this paper, we report the value $Q(^{87}\mathrm{Sr})=328(4)$ mb, making use of our calculated electric-field gradients produced by electrons at the nucleus in combination with experimental values for hyperfine structures of the $5s5p\phantom{\rule{0.16em}{0ex}}^{3}P_{1,2}$ states of the neutral Sr atom. In the framework of the multiconfiguration Dirac-Hartree-Fock Theory, the electron correlations were taken into account systematically so as to control the uncertainties of the electric-field gradient at about 1% level. The present result is different from the recommended value, but in excellent agreement with those by M\aa{}tensson-Pendrill and Yu et al.. We would recommend the present $Q$ value as a reference for $^{87}\mathrm{Sr}$.
Tingxian Zhang - One of the best experts on this subject based on the ideXlab platform.
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reevaluation of the nuclear electric quadrupole moment for 87 sr by hyperfine structures and relativistic Atomic Theory
Physical Review A, 2019Co-Authors: Tingxian Zhang, Hong Chang, Jianguo WangAbstract:The values of nuclear electric quadrupole moment are different by about 7% for 87Sr nucleus between the recommended value [N. J. Stone, At. Data Nucl. Data Tables 111-112, 1 (2016); P. Pyykko, Mol. Phys. 116, 1328 (2018)] and earlier results [e.g. A. M. Matensson-Pendrill, J. Phys. B: At. Mol. Opt. Phys. 35, 917 (2002); K. Z. Yu et al., Phys. Rev. A 70, 012506 (2004)]. In this work, we reported a new value, Q(87Sr) = 328(4) mb, making use of our calculated electric field gradients produced by electrons at nucleus in combination with experimental values for hyperfine structures of the 5s5p 3P1,2 states of the neutral Sr atom. In the framework of the multi-configuration Dirac-Hartree-Fock Theory, the electron correlations were taken into account systematically so as to control the uncertainties of the electric field gradient at about 1% level. The present result is different from the recommended value, but in excellent agreement with those by Matensson-Pendrill and Yu et al.. We would recommend the present Q value as a reference for 87Sr.
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reevaluation of the nuclear electric quadrupole moment for sr 87 by hyperfine structures and relativistic Atomic Theory
Physical Review A, 2019Co-Authors: Tingxian Zhang, Hong Chang, Jianguo WangAbstract:The values of the nuclear electric quadrupole moment are different by about 7% for the $^{87}\mathrm{Sr}$ nucleus between the recommended value [Stone, At. Data Nucl. Data Tables 111-112, 1 (2016); Pyykk\"o, Mol. Phys. 116, 1328 (2018)] and earlier results [e.g., M\aa{}rtensson-Pendrill, J. Phys. B 35, 917 (2002); Yu, Wu, Gou, and Shi, Phys. Rev. A 70, 012506 (2004)]. In this paper, we report the value $Q(^{87}\mathrm{Sr})=328(4)$ mb, making use of our calculated electric-field gradients produced by electrons at the nucleus in combination with experimental values for hyperfine structures of the $5s5p\phantom{\rule{0.16em}{0ex}}^{3}P_{1,2}$ states of the neutral Sr atom. In the framework of the multiconfiguration Dirac-Hartree-Fock Theory, the electron correlations were taken into account systematically so as to control the uncertainties of the electric-field gradient at about 1% level. The present result is different from the recommended value, but in excellent agreement with those by M\aa{}tensson-Pendrill and Yu et al.. We would recommend the present $Q$ value as a reference for $^{87}\mathrm{Sr}$.
Darko Kapor - One of the best experts on this subject based on the ideXlab platform.
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bohr sommerfeld quantum Theory of the magnetic monopoles electron electromagnetic mass and fine structure constant
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In this work we apply Bohr-Sommerfeld (Old quantum Atomic) Theory for analysis of some remarkable electro-dynamical problems, concretely magnetic monopoles, electron electromagnetic mass and fine structure constant. We reproduce exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr-Sommerfeld Theory at the system, simply called magnetic monopole 'atom', consisting of the practically standing, massive magnetic monopole as the 'nucleus' and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, we obtain exactly relativistic equivalence between electron electromagnetic self-interaction energy (that is negative and that corresponds to the electron as a stable system without introduction of any non-electromagnetic forces) and electron electromagnetic mass (without any non-electromagnetic mass fractions). It follows, in full agreement with Heisenberg uncertainty relations and Compton wavelength definition, after application of Bohr-Sommerfeld Theory at the effective, 'real' electron modeled as a complex system, simply called electron 'atom'(consisting of two virtual, point-like electrons and one virtual, point-like positron in the middle) or, generally, electron 'lattice' (consisting of many virtual, point-like electrons and positrons). Especially for electron 'lattice' consisting of the virtual, point-like four electrons and three positrons, we obtain corresponding 'discrete Madelung constant' practically exactly 1000 times larger than fine structure constant.
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bohr quantum Theory and creation by gauge transformation of the magnetic monopoles
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
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bohr sommerfeld quantum Theory of the magnetic monopoles and electron electromagnetic mass
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
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bohr sommerfeld Theory of the magnetic monopole
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
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bohr sommerfeld Theory of the magnetic monopole with quasi confinement
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
Vladan Pankovic - One of the best experts on this subject based on the ideXlab platform.
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bohr sommerfeld quantum Theory of the magnetic monopoles electron electromagnetic mass and fine structure constant
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In this work we apply Bohr-Sommerfeld (Old quantum Atomic) Theory for analysis of some remarkable electro-dynamical problems, concretely magnetic monopoles, electron electromagnetic mass and fine structure constant. We reproduce exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr-Sommerfeld Theory at the system, simply called magnetic monopole 'atom', consisting of the practically standing, massive magnetic monopole as the 'nucleus' and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, we obtain exactly relativistic equivalence between electron electromagnetic self-interaction energy (that is negative and that corresponds to the electron as a stable system without introduction of any non-electromagnetic forces) and electron electromagnetic mass (without any non-electromagnetic mass fractions). It follows, in full agreement with Heisenberg uncertainty relations and Compton wavelength definition, after application of Bohr-Sommerfeld Theory at the effective, 'real' electron modeled as a complex system, simply called electron 'atom'(consisting of two virtual, point-like electrons and one virtual, point-like positron in the middle) or, generally, electron 'lattice' (consisting of many virtual, point-like electrons and positrons). Especially for electron 'lattice' consisting of the virtual, point-like four electrons and three positrons, we obtain corresponding 'discrete Madelung constant' practically exactly 1000 times larger than fine structure constant.
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bohr quantum Theory and creation by gauge transformation of the magnetic monopoles
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
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bohr sommerfeld quantum Theory of the magnetic monopoles and electron electromagnetic mass
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
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bohr sommerfeld Theory of the magnetic monopole
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
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bohr sommerfeld Theory of the magnetic monopole with quasi confinement
2010Co-Authors: Vladan Pankovic, Darko KaporAbstract:In the first part of this work we apply Bohr (old or naive quantum Atomic) Theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles Theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr Theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleus" and electron rotating stable around magnetic monopole under magnetic and electrostatic interactions. Also, in the second part of this work we suggest a simple solution of the classical electron electromagnetic mass problem.
Hong Chang - One of the best experts on this subject based on the ideXlab platform.
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reevaluation of the nuclear electric quadrupole moment for 87 sr by hyperfine structures and relativistic Atomic Theory
Physical Review A, 2019Co-Authors: Tingxian Zhang, Hong Chang, Jianguo WangAbstract:The values of nuclear electric quadrupole moment are different by about 7% for 87Sr nucleus between the recommended value [N. J. Stone, At. Data Nucl. Data Tables 111-112, 1 (2016); P. Pyykko, Mol. Phys. 116, 1328 (2018)] and earlier results [e.g. A. M. Matensson-Pendrill, J. Phys. B: At. Mol. Opt. Phys. 35, 917 (2002); K. Z. Yu et al., Phys. Rev. A 70, 012506 (2004)]. In this work, we reported a new value, Q(87Sr) = 328(4) mb, making use of our calculated electric field gradients produced by electrons at nucleus in combination with experimental values for hyperfine structures of the 5s5p 3P1,2 states of the neutral Sr atom. In the framework of the multi-configuration Dirac-Hartree-Fock Theory, the electron correlations were taken into account systematically so as to control the uncertainties of the electric field gradient at about 1% level. The present result is different from the recommended value, but in excellent agreement with those by Matensson-Pendrill and Yu et al.. We would recommend the present Q value as a reference for 87Sr.
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reevaluation of the nuclear electric quadrupole moment for sr 87 by hyperfine structures and relativistic Atomic Theory
Physical Review A, 2019Co-Authors: Tingxian Zhang, Hong Chang, Jianguo WangAbstract:The values of the nuclear electric quadrupole moment are different by about 7% for the $^{87}\mathrm{Sr}$ nucleus between the recommended value [Stone, At. Data Nucl. Data Tables 111-112, 1 (2016); Pyykk\"o, Mol. Phys. 116, 1328 (2018)] and earlier results [e.g., M\aa{}rtensson-Pendrill, J. Phys. B 35, 917 (2002); Yu, Wu, Gou, and Shi, Phys. Rev. A 70, 012506 (2004)]. In this paper, we report the value $Q(^{87}\mathrm{Sr})=328(4)$ mb, making use of our calculated electric-field gradients produced by electrons at the nucleus in combination with experimental values for hyperfine structures of the $5s5p\phantom{\rule{0.16em}{0ex}}^{3}P_{1,2}$ states of the neutral Sr atom. In the framework of the multiconfiguration Dirac-Hartree-Fock Theory, the electron correlations were taken into account systematically so as to control the uncertainties of the electric-field gradient at about 1% level. The present result is different from the recommended value, but in excellent agreement with those by M\aa{}tensson-Pendrill and Yu et al.. We would recommend the present $Q$ value as a reference for $^{87}\mathrm{Sr}$.