NEUTRINO-PAIR EMISSION DUE TO ELECTRON-PHONON SCATTERING IN A NEUTRON-STAR CRUST

Neutrino-pair bremsstrahlung radiation due to the scattering of degene rate, relativistic electrons by phonons in a lattice of spherical atom ic nuclei in a neutron-star crust is considered. The exact phonon spec trum, the Debye-Waller factor, and the nuclear form factor are used to calculate the neutrino energy generation rate in the density range 10 (7)-10(14) g cm(-3) for arbitrary nuclear composition for body-centere d-cubic and face-centered-cubic Coulomb crystals. The results are fitt ed by a single analytical expression. The neutrino bremsstrahlung ener gy loss rates in a neutron-star crust composed of ground-state and acc reted matter in the solid and liquid phases are compared.