172 research outputs found
On Double-Beta Decay Half-Life Time Systematics
Recommended 2 (2 ) half-life values and their systematics were
analyzed in the frame- work of a simple empirical approach. T
~ 1/E trend has been observed for Te recommended values. This
trend was used to predict T 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-mode half-life time in Te and the corresponding ratio of
Te half-lives. These values imply the
-decay transition energy trend that is consistent
with the two-nucleon mechanism of (2)-decay
Sigma web interface for reactor data applications
We present Sigma Web interface which provides user-friendly access for online
analysis and plotting of the evaluated and experimental nuclear reaction data
stored in the ENDF-6 and EXFOR formats. The interface includes advanced
browsing and search capabilities, interactive plots of cross sections, angular
distributions and spectra, nubars, comparisons between evaluated and
experimental data, computations for cross section data sets, pre-calculated
integral quantities, neutron cross section uncertainties plots and
visualization of covariance matrices. Sigma is publicly available at the
National Nuclear Data Center website at http://www.nndc.bnl.gov/sigma
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