Neutrino-Induced Charged-Current Reaction Rates for r-PROCESS Nuclei

Details Neutrino-Induced Charged-Current Reaction Rates for r-PROCESS Nuclei Neutrino-Induced Charged-Current Reaction Rates for r-PROCESS Nuclei

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001adndt..79..293l&link_type=abstract

Atomic Data and Nuclear Data Tables, Volume 79, Issue 2, p. 293-315.

Physics

8

Scientific paper

Neutrino-induced reactions play an important role during and after the r-process if it occurs in an environment with extreme neutrino fluxes, as in the neutrino-driven wind model or neutron star mergers. The neutrino reactions can excite the daughter nucleus above the neutron threshold, which is quite low for r-process nuclei. Thus the daughter nucleus will decay by emission of one or several neutrons. We have calculated the relevant total (νe, e-) cross sections as well as the partial neutron spallation cross sections for r-process nuclei with neutron numbers N=41-135 and proton numbers Z=21-82. The supernova neutrino spectrum is described by a Fermi-Dirac distribution with various temperature parameters between T=2.8 MeV and T=10 MeV and with the degeneracy parameters α=0 and α=3. Our calculations of the nuclear response are based on the random phase approximation and consider allowed as well as forbidden transitions.

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