Search

Two cerium compounds, Ce{N[Si(CH3)3]2}3 and Ce(tmhd)4 (tmhd=2,2,6,6-tetramethylheptane-3,5-dionate), have been evaluated for utilization in the preparation of thin films of SrS:Ce by atomic layer epitaxy (ALE). The resultant coatings have been characterized for use in electroluminescent (EL) devices. The observed emission maximum at 518 nm for the devices derived from Ce(tmhd)4 shifts to 480 nm for those resulting from Ce{N[Si(CH3)3]2}3. This shift may be correlated with the basicity of the ligand present on the dopant element.

The design, synthesis and X-ray crystal structure of the first intramolecularly coordinated homoleptic, monomeric and highly volatile magnesium alkylamide example, Mg{N[Si(CH₃)₃](CH₂)₃N(CH₃)₂}₂, are described.

The remnant of neutron star mergers is dense in neutrinos. By employing inputs from one hydrodynamical simulation of a binary neutron star merger remnant with a black hole of 3 M⊙ in the center, dimensionless spin parameter 0.8 and an accretion torus of 0.3 M⊙, the neutrino emission properties are investigated as the merger remnant evolves. Initially, the local number density of ¯νe is larger than that of νe everywhere above the remnant. Then, as the torus approaches self-regulated equilibrium, the local abundance of neutrinos overcomes that of antineutrinos in a funnel around the polar region. The region where the fast pairwise flavor conversions can occur shrinks accordingly as time evolves. Still, we find that fast flavor conversions do affect most of the neutrino-driven ejecta. Assuming that fast flavor conversions lead to flavor equilibration, a significant enhancement of nuclei with mass numbers A>130 is found as well as a change of the lanthanide mass fraction by more than a factor of a thousand. Our findings hint towards a potentially relevant role of neutrino flavor oscillations for the prediction of the kilonova (macronova) light curves and motivate further work in this direction. [ABSTRACT FROM AUTHOR]