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Neutrino-Induced r -Process Nucleosynthesis

1988; American Physical Society; Volume: 61; Issue: 18 Linguagem: Inglês

10.1103/physrevlett.61.2038

1092-0145

Richard I. Epstein, Stirling A. Colgate, W. C. Haxton,

Pulsars and Gravitational Waves Research

We propose that the $r$-process elements may be synthesized in the helium zones surrounding a newly forming neutron star. Neutrinos released from a cooling neutron star produce neutrons (and other nuclides) by neutral-current excitations of $^{4}\mathrm{He}$. If the neutron-star progenitor is metal-poor, compact, or both, the flux of free neutrons is sufficiently intense and of long enough duration to generate an $r$ process.