Deuteron Disintegration, Neutral Currents, and Antineutrino Spectra from Fission

Abstract

Differential and integral cross sections for the disintegration of the deuteron by antineutrinos, both in the charge-exchange and the hypothetical charge-retention mode, are presented, together with the salient features of assumptions and calculations. The incident spectra used, those due to equilibrium and instantaneous fission, are also presented. For comparison, integral cross sections weighted by the lithium-8 spectrum are added. When weighted by the equilibrium fission spectrum, the values derived here of the integral cross sections in the two modes are ${\sigma }_{\mathrm{nn}}=0.272\mathrm{}\times {10}^{-44\mathrm{}}$ ${\mathrm{cm}}^2$ and ${\sigma }_{\mathrm{pn}}=0.655\mathrm{}\times {10}^{-44\mathrm{}}$ ${\mathrm{cm}}^2$, respectively.