Abundance distribution of heavy nuclides up to a subnuclear density and the equation of state for gravitationally collapsing stars

作者: Teruaki Ohnishi

DOI: 10.1007/BF00653446

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摘要: With the use of empirical equations for binding and internal energies heavy nuclides with density dependence, abundance distribution neutron-excess which appear up to some subnuclear along collapsing trajectory a stellar core is calculated an assumption β-equilibrium condition. Free nucleons are simply assumed be non-interacting, degenerate fermions. Using thus derived, quantities affecting hydrodynamics core, such as average mass number fraction nuclides, free neutrons, electrons per baryon, excitation energy nucleus, entropy, pressure adiabatic index system then calculated. It found that we can obtain fairly reliable values these physical by introducing only magic near-magic in calculation, results hardly affected difference semi-empirical nuclear formula derive unknown grand partition function nuclides.

参考文章(24)
P.A. Seeger, W.M. Howard, A semiempirical liquid-drop plus shell-correction formula Atomic Data and Nuclear Data Tables. ,vol. 17, pp. 428- 430 ,(1976) , 10.1016/0092-640X(76)90032-2
Manuel Barranco, J. Robert Buchler, Thermodynamic properties of hot nucleonic matter Physical Review C. ,vol. 22, pp. 1729- 1737 ,(1980) , 10.1103/PHYSREVC.22.1729
D. Q. Lamb, J. M. Lattimer, C. J. Pethick, D. G. Ravenhall, Hot Dense Matter and Stellar Collapse Physical Review Letters. ,vol. 41, pp. 1623- 1626 ,(1978) , 10.1103/PHYSREVLETT.41.1623
G. T. GARVEY, W. J. GERACE, R. L. JAFFE, I. TALMI, I. KELSON, Set of Nuclear-Mass Relations and a Resultant Mass Table Reviews of Modern Physics. ,vol. 41, pp. 1- 80 ,(1969) , 10.1103/REVMODPHYS.41.S1
A. Gilbert, A. G. W. Cameron, A COMPOSITE NUCLEAR-LEVEL DENSITY FORMULA WITH SHELL CORRECTIONS Canadian Journal of Physics. ,vol. 43, pp. 1446- 1496 ,(1965) , 10.1139/P65-139
D.Q. Lamb, J.M. Lattimer, C.J. Pethick, D.G. Ravenhall, Physical properties of hot, dense matter: The bulk equilibrium approximation Nuclear Physics A. ,vol. 360, pp. 459- 482 ,(1981) , 10.1016/0375-9474(81)90157-3
S. W. Bruenn, W. D. Arnett, D. N. Schramm, Some criteria for mass ejection by stars undergoing gravitational collapse The Astrophysical Journal. ,vol. 213, pp. 213- 224 ,(1977) , 10.1086/155147
Wolfgang A Küpper, Gerd Wegmann, Eberhard R Hilf, Thermostatic properties of symmetric nuclear matter Annals of Physics. ,vol. 88, pp. 454- 471 ,(1974) , 10.1016/0003-4916(74)90178-X
R. I. Epstein, C. J. Pethick, Lepton loss and entropy generation in stellar collapse The Astrophysical Journal. ,vol. 243, pp. 1003- 1012 ,(1981) , 10.1086/158665