Test of claims that radioactive half-lives depend on the Earth-Sun distance
نویسندگان
چکیده
منابع مشابه
Do radioactive half-lives vary with the Earth-to-Sun distance?
Recently, Jenkins, Fischbach and collaborators have claimed evidence that radionuclide half-lives vary systematically over a ±0.1% range as a function of the oscillating distance between the Earth and the Sun, based on multi-year activity measurements. We have avoided the time-dependent instabilities to which such measurements are susceptible by directly measuring the half-life of (198)Au (t(1/...
متن کاملβ-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...
متن کاملRadioactive 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...
متن کاملPeriodicity of Downward Longwave Radiation at an Equatorial Location
A good understanding of the diverse mechanisms in the atmosphere is required in modelling the climate. In this study, the diurnal and seasonal patterns of all-sky downward longwave radiation (DLR) at Ilorin (8o 32l N, 4o 34l E), Nigeria were investigated alongside relative humidity (RH) and temperature. The average diurnal pattern of DLR gives an arc that begins by increasing gradually with som...
متن کاملPower in Global Health Agenda-Setting: The Role of Private Funding; Comment on “Knowledge, Moral Claims and the Exercise of Power in Global Health”
The editorial by Jeremy Shiffman, “Knowledge, moral claims and the exercise of power in global health”, highlights the influence on global health priority-setting of individuals and organizations that do not have a formal political mandate. This sheds light on the way key functions in global health depend on private funding, particularly from the Bill & Melinda Gates Foundation.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2011