Results 331 to 340 of about 8,525,793 (378)

On nuclear theory

2007
We discuss a new interpretation of Heisenberg’s nuclear theory which leads to a slightly different Hamiltonian function. Accordingly we treat the nuclei statistically.
Ettore Majorana, L. A. Radicati di Brozolo   +1 more
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Theory of Mesons and Nuclear Forces

Nature, 1939
As was first pointed out by Yukawa, it is in principle possible to account for the short-range forces between nuclear particles by the assumption of virtual emission and absorption processes involving intermediary particles of integral spin, the so-called mesons1, the mass of which is determined by the range of the forces. As has been shown by Kemmer2,
Moller, C., Rosenfeld, L.
openaire   +2 more sources

The Evaporation Theory of Nuclear Disintegrations

Proceedings of the Physical Society. Section A, 1950
The relationship between nuclear temperature and excitation energy is discussed taking into account the thermal expansion of the nucleus and the effect of the neutron excess. Using these results, the evaporation theory is put into a form suitable for the treatment of highly excited nuclei.
openaire   +2 more sources

Unified theory of nuclear reactions

Annals of Physics, 1958
A new formulation of the theory of nuclear reactions based on the properties of a generalized “optical” potential is presented. The real and imaginary part of this potential satisfy a dispersion type relation while its poles give rise to resonances in nuclear reactions.
openaire   +1 more source

Yukawa theories in nuclear physics

Physical Review C, 1988
The validity of Yukawa theories in nuclear physics is questioned beyond the mean-field approximation. It is shown that the large value of the meson-nucleon coupling constant puts an immediate upper bound on the relevant physical scale (about the nucleon mass) and this irrespective of the issue of renormalizability.
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Nuclear Theory

Science, 1964
  +5 more sources

THEORY OF THE NUCLEAR RELAXATION RATES

Journal of Magnetism and Magnetic Materials, 1987
Abstract The nuclear relaxation rates as function of temperature have been calculated in the Varma model for the heavy-fermion materials. The results are compared with the calculation performed recently which neglected the spin fluctuations.
openaire   +1 more source

On Schwinger's Theory of Nuclear Forces

Proceedings of the Physical Society, 1948
It is shown that Schwinger's generalization of the Moller-Rosenfeld theory cannot consistently be used to describe nuclear forces. It does not lead to the correct quadrupole moment of the deuteron, and it offers no hope of a detailed agreement with proton-proton scattering.
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Model-free approach to the interpretation of nuclear magnetic resonance relaxation in macromolecules. 1. Theory and range of validity

, 1982
G. Lipari, A. Szabó
semanticscholar   +1 more source

Nuclear theory

Nature, 1969
openaire   +1 more source