radioactivedecay is a Python package for radioactive decay modelling. It contains functions to fetch data, define inventories of nuclides and perform calculations. The default nuclear dataset supplied with based on ICRP Publication 107, which covers 1252 radioisotopes 97 elements. code calculates an analytical solution matrix form the chain differential equations using double or higher precisio...

The UK nuclear power industry is predominantly based on gas-cooled, graphite moderated reactors with their being 20 operating and 6 shutdown Magnox reactors. The radioactive graphite issues associated with the Magnox reactors relate mainly to the reactor core graphite but, at two of the stations, there is also another graphite waste stream which results from the handling of their particular des...

The oRules of state reduction are applied to the Schrödinger cat experiment. It is shown that these rules can unambiguously describe the conscious state of the cat, as well as an outside observer at any time during the experiment. Two versions of the experiment are considered. In version I, the conscious cat is made unconscious by a mechanism that is triggered by a radioactive decay. In version...

We study the dynamics of a radioactive species flowing through a porous material, within the Continuous-Time Random Walk (CTRW) approach to the modelling of stochastic transport processes. Emphasis is given to the case where radioactive decay is coupled to anomalous diffusion in locally heterogeneous media, such as porous sediments or fractured rocks. In this framework, we derive the distributi...

We report on Auger stimulated ion desorption via Coulomb explosion from surface self-assembled alkylthiol and fluorocarbon molecular layers, triggered by K-capture decay of an imbedded radioactive 55Fe atom. The charge state of the ejecta is determined by charge exchange in binary atomic collisions in bulk and electron tunneling outside the solid, as well as by fragmentation of electronically e...

The absorption of radioactive cholesterol tended to be increased, and the catabolism of cholesterol detected by the decay of radioactive cholesterol in the serum after the intraperitoneal injection was delayed in ALR in comparison with normotensive WK rats. The reactive hypercholesterolemia in the ALR which had been selectively bred for a greater hypercholesterolemia was ascribed to the decreas...