Physics – Nuclear Physics
Scientific paper
May 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977afz....13..295s&link_type=abstract
Astrofizika, vol. 13, May 1977, p. 295-311. In Russian.
Physics
Nuclear Physics
7
Degenerate Matter, Dense Plasmas, Nuclear Physics, Pions, Plasma Physics, Astrophysics, Electron Plasma, Neutrons, Nuclei (Nuclear Physics), Theoretical Physics, White Dwarf Stars
Scientific paper
An analysis is performed which demonstrates that pionization of matter (i.e., the appearance of negative pions in atomic nuclei) occurs simultaneously with neutronization at densities of at least about 100 trillion g/cu cm. Weizsaecker's formula is improved in such a way that the parameters characterizing a degenerate electron-neutron gas can be calculated numerically with a mean accuracy of 5%. Numerical results are presented for nucleon number densities greater than approximately 10 to the 37th power per cu cm, the threshold density for the appearance of negative pions in degenerate-plasma nuclei is determined, and the mean plasma energy per nucleon is computed. The results show that the number of negative pions in atomic nuclei increases slowly with increasing density and attains a value of approximately 8% of the number of nucleons at densities just below nuclear density. It is also found that the presence of pions reduces the energy of the degenerate electron-neutron gas and enhances the stability of atomic nuclei.
Grigorian Sh. L.
Saakian G. S.
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