منابع مشابه
Is Radioactive Decay Really Exponential?
Radioactive decay of an unstable isotope is widely believed to be exponential. This view is supported by experiments on rapidly decaying isotopes but is more difficult to verify for slowly decaying isotopes. The decay of 14C can be calibrated over a period of 12,550 years by comparing radiocarbon dates with dates obtained from dendrochronology. It is well known that this approach shows that rad...
متن کاملRadioactive Decay Energy Deposition in Supernovae and the Exponential/quasi-exponential Behavior of Late-time Supernova Light Curves
The radioactive decay energy (RDE) deposition in supernovae from the decay chain Ni →56Co →56Fe usually directly powers the ultraviolet/optical/infrared (UVOIR) bolometric luminosity of supernovae in their quasi-steady state phase until very late times. The result for this phase is exponential/quasiexponential UVOIR bolometric light curves and often exponential/quasi-exponential broad band ligh...
متن کاملPoisson Distribution of Radioactive Decay
In this experiment we observe the distribution of radiation emitted by a Cs source. Using a scintillation counter, we count the number of gamma rays emitted by the radiation source at four different mean count rates: 1 sec−1, 4 sec−1, 10 sec−1, and 100 sec−1. From this we can plot the distribution of counts/sec versus the frequency of count rate. We find the distributions for the different mean...
متن کاملPoisson Statistics of Radioactive Decay
Poisson statistics were studied using the radioactive decay of Cs as a source. A scintillation counter measured gamma rays emitted by Cs as well as background from cosmic rays and other experiments in the laboratory. Data from approximate mean rates of 1, 4, 10 and 100 counts/sec was compared to both theoretical Poisson distributions and Monte Carlo simulations. The reduced chi squared values f...
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...
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ژورنال
عنوان ژورنال: EPL (Europhysics Letters)
سال: 2012
ISSN: 0295-5075,1286-4854
DOI: 10.1209/0295-5075/97/52001