Meson Theory and the Magnetic Moments of Protons and Neutrons

1942 ◽  
Vol 62 (3-4) ◽  
pp. 180-180 ◽  
Author(s):  
H. Fröhlich
Keyword(s):  
Magnetic Moments ◽  
Meson Theory ◽  
Protons And Neutrons

On the Magnetic Moments of the Nucleons in Meson Theory

1949 ◽  
Vol 75 (8) ◽  
pp. 1277-1278 ◽  
Author(s):  
J. M. Luttinger
Keyword(s):  
Magnetic Moments ◽  
Meson Theory

scholarly journals NEUTRON SPIN POLARIZATION IN STRONG MAGNETIC FIELDS

2005 ◽  
Vol 14 (08) ◽  
pp. 1197-1204 ◽  
Author(s):  
H. WEN ◽  
L. S. KISSLINGER ◽  
WALTER GREINER ◽  
G. MAO
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Spin Polarization ◽  
Magnetic Moments ◽  
Wave Functions ◽  
Neutron Spin ◽  
Strong Magnetic Fields ◽  
Protons And Neutrons ◽  
Free Fermi ◽  
The Magnetic Field

The effects of strong magnetic fields on the inner crust of neutron stars are investigated after taking into account the anomalous magnetic moments of nucleons. The energy spectra and wave functions for protons and neutrons in a uniform magnetic field are provided. The particle spin polarizations and the yields of protons and neutrons are calculated in a free Fermi gas model. Obvious spin polarizations occur when B≥1014 G for protons and B≥1017 G for neutrons, respectively. It is shown that the neutron spin polarization depends solely on the magnetic field strength.

scholarly journals Nuclear structure is governed by the fundamental laws of electromagnetism

2019 ◽  
Vol 11 ◽  
Author(s):  
L. A. Kaliambos
Keyword(s):  
Magnetic Moments ◽  
Careful Analysis ◽  
Pauli Principle ◽  
Binding Energies ◽  
Meson Theory ◽  
Charge Independence ◽  
Independence Hypothesis ◽  
Electronic Configurations ◽  
Basic Equations ◽  
Nuclear Shell

Contradicting interpretations of the nuclear force as given by two contrasted approaches like the meson theory and the quantum chromodynamics, are overcome here by reviving the basic electromagnetic laws which are applicable on the existing charged subconstituents in nucléons. On this basis, considerable charge distributions in nucleons are determined after a careful analysis of the magnetic moments and the results of the deep inelastic scattering. Basic equations derived from the distributed charges of oriented spins of nucléons give strong and short ranged forces leading exactly to the binding energies of the deuteron and other nuclei. According to these interactions, p-p and n-n systems repel and only the p-n bonds form rectangles and closely packed parallelepipeds. Such contrary forces create structures of saturation and of finite number of nucléons. They also invalidate the charge independence hypothesis and differ fundamentally from the central potential and the effects of the Pauli principle of the electronic configurations responsible for the development of the models of the Fermi gas and nuclear shell. There are two kinds of p-n bonds, which imply anisotropy, leading often to elongated shapes of vibrational and rotational modes of excitation, while the surface tension contributes to the creation of non elongated shapes of stable arrangements. Finally, for A>40 a type of shell structure provides new rules for understanding the structure of magic nuclei for N>Z and the increasing ratio N/Z with A.

scholarly journals Nucleon Magnetic Moments in Ps-Ps Intermediate Coupling Meson Theory

1956 ◽  
Vol 16 (2) ◽  
pp. 95-111 ◽  
Author(s):  
Akira Kanazawa ◽  
Masao Sugawara
Keyword(s):  
Magnetic Moments ◽  
Intermediate Coupling ◽  
Meson Theory

The effect of Tin additionon on Structural and magnetic properties of the stannoferrite Li0.5+0.5XFe2.5-1.5XSnXO4

2016 ◽  
Vol 12 (3) ◽  
pp. 4307-4321 ◽  
Author(s):  
Ahmed Hassan Ibrahim ◽  
Yehia Abbas
Keyword(s):  
Particle Size ◽  
Fine Particles ◽  
Magnetic Moments ◽  
Lithium Ferrite ◽  
Tem Analysis ◽  
Weiss Temperature ◽  
X Ray ◽  
Two Phases ◽  
Nanocrystalline Ferrite ◽  
20 Nm

The physical properties of ferrites are verysensitive to microstructure, which in turn critically dependson the manufacturing process.Nanocrystalline Lithium Stannoferrite system Li0.5+0.5XFe2.5-1.5XSnXO4,X= (0, 0.2, 0.4, 0.6, 0.8 and 1.0) fine particles were successfully prepared by double sintering ceramic technique at pre-sintering temperature of 500oC for 3 h andthepre-sintered material was crushed and sintered finally in air at 1000oC.The structural and microstructural evolutions of the nanophase have been studied using X-ray powder diffraction (XRD) and the Rietveld method.The refinement results showed that the nanocrystalline ferrite has a two phases of ordered and disordered phases for polymorphous lithium Stannoferrite.The particle size of as obtained samples were found to be ~20 nm through TEM that increases up to ~ 85 nmand isdependent on the annealing temperature. TEM micrograph reveals that the grains of sample are spherical in shape. (TEM) analysis confirmed the X-ray results.The particle size of stannic substituted lithium ferrite fine particle obtained from the XRD using Scherrer equation.Magneticmeasurements obtained from lake shore’s vibrating sample magnetometer (VSM), saturation magnetization ofordered LiFe5O8 was found to be (57.829 emu/g) which was lower than disordered LiFe5O8(62.848 emu/g).Theinterplay between superexchange interactions of Fe3+ ions at A and B sublattices gives rise to ferrimagnetic ordering of magnetic moments,with a high Curie-Weiss temperature (TCW ~ 900 K).

Sign in / Sign up

Export Citation Format

Share Document