Do radioactive half-lives vary with the Earth-to-Sun distance?

Test of claims that radioactive half-lives depend on the Earth-Sun distance

β-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N=82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process.

The β-decay half-lives of 110 neutron-rich isotopes of the elements from _{37}Rb to _{50}Sn were measured at the Radioactive Isotope Beam Factory. The 40 new half-lives follow robust systematics and highlight the persistence of shell effects. The new data have direct implications for r-process calculations and reinforce the notion that the second (A≈130) and the rare-earth-element (A≈160) abund...

Radioactive Decay Caused by Neutrinos?

The result of a long-term experiment is presented and discussed. The experiment aimed at testing the hypothesis that radioactive β-decay might be caused by the omnipresent neutrino flux coming from the sun and other sources, by trying to find a positive correlation between the decay rate of tritium and the annually varying solar neutrino flux, due to the annually changing distance from sun to e...

Scaling relations in dynamical evolution of star clusters

We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through an external galaxy potential with a logarithmic density profile and they are limited by a cut-off radius. In order to find scaling relations between the lifetime of star cluste...

گاه‌های آفرینشی در برخی از فرش‌های شیری فارس

The common element in the Persian Shiri carpets is lion, sometimes accompanied with Sword and full or half sun. Sword is a symbol of power & war and Sun is a symbol of Imam Ali (PBUH). In addition to lion and sun, pictures of lion-cow-attack, with their ancient history in Iranian art, are represented in Fars’ Shiri carpets in other methods. For this reason, calendar, changes of seasons & ...