Complete calculation of evaluated Maxwellian-averaged cross sections and their uncertainties for s-process nucleosynthesis

Present contribution represents a significant improvement of our previous calculation of Maxwellian-averaged cross sections and astrophysical reaction rates. Addition of newly-evaluated neutron reaction libraries, such as ROSFOND and Low-Fidelity Covariance Project, and improvements in data processing techniques allowed us to extend it for entire range of s-process nuclei, calculate Maxwellian-averaged cross section uncertainties for the first time, and provide additional insights on all currently available neutron-induced reaction data. Nuclear reaction calculations using ENDF libraries and current Java technologies will be discussed and new results will be presented.Comment: 6 pages, 2 figure

On Double-Beta Decay Half-Life Time Systematics

Recommended 2 $\beta$ (2 $\nu$) half-life values and their systematics were analyzed in the frame- work of a simple empirical approach. T$^{2 \nu}$$_{1/2}$ ~ 1/E$^{8}$ trend has been observed for $^{128,130}$Te recommended values. This trend was used to predict T$^{2 \nu}$$_{1/2}$ for all isotopes of interest. Current results were compared with other theoretical and experimental works

Comment on "Precise half-life values for two-neutrino double beta decay"

The results by A.S. Barabash [Phys. Rev. {\bf C 81}, 035501 (2010)] are shown to be incomplete. Tellurium data sets were reanalyzed using the best practices of ENSDF evaluations. Present analysis indicates much higher value for the 2$\nu$-mode half-life time in $^{128}$Te and the corresponding ratio of $^{128,130}$Te half-lives. These values imply the $T^{2 \nu}_{1/2}$ $\sim$ $\frac{1}{E^{8}}$ $\beta\beta$-decay transition energy trend that is consistent with the two-nucleon mechanism of $\beta\beta$(2$\nu$)-decay