Pycnonuclear triple-alpha-fusion rate in hypernetted chain approximation.

Details Pycnonuclear triple-alpha-fusion rate in hypernetted chain approximation. Pycnonuclear triple-alpha-fusion rate in hypernetted chain approximation.

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992zphya.342..133m&link_type=abstract

Z. Phys., A, Vol. 342, No. 2, p. 133 - 140

Physics

2

Scientific paper

The authors have studied the helium plasma in the hypernetted-chain-approximation considering both short-ranged internuclear and long-ranged Coulomb interactions. The two-particle distribution functions are used to determine the pycnonuclear triple-alpha-fusion rate in the density regime 108g/cm3 ≤ ρ ≤ 1010g/cm3, in which the fusing of three alpha-particles to form a 12C-nucleus plays an important role in the crust evolution of an accreting old neutron star. The calculation supports the idea that the helium liquid undergoes a phase transition to stable 8Be matter at densities slightly lower than ρ ≍ 3×109g/cm3 as the plasma induced screening potential then becomes strong enough to bind the 8Be ground state.

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