Radioactive decay is a statistical process, described mathematically using an exponential function. This chapter also provides a brief description of the units of radioactivity (Curie and Becquerel), half-life, the mathematics of parent-daughter relationships in radionuclide generator systems, and the ...
Radioactivity is the process whereby unstable atomic nuclei release energetic subatomic particles or electromagnetic radiation (EMR). This phenomenon can cause one element to turn into another and is partly responsible for the heat of the Earth’s core. Radioactivity has a wide range of uses, ...
Within the nuclei of stable atoms, such as those of lead, the force binding the protons and neutrons to each other individually is great enough to hold the nuclei together as a whole. In the nuclei of other atoms, especially of heavy ones such as uranium atoms, this energy is not great...
In beta decay a neutron within the nucleus changes to a proton, in the process emitting an electron and an antineutrino (the antiparticle of the neutrino, a neutral particle with a small mass). The electron is immediately ejected from the nucleus, and the net result is an increase of 1 ...
Natural Radioactivity of Selected Rocks from the Vicinity of the Rozna Uranium Deposit The aim of the paper is to present preliminary results of studies of natural radioactivity of selected rocks from the Vysocina region occurring relatively ... ALEKSANDRA SITAREK,JAROSLAW BADERA,GRZEGORZ LIZUREK -...
A simple apparatus is described which serves to demonstrate both the buildup and decay of radioactivity. The buildup is observed by, in effect, periodicall... Iwao,Tamura,Kazuyoshi,... - 《Studies in Science & Technology》 被引量: 0发表: 2015年 The Japan Power Demonstration Reactor decommiss...
Environmental radiation and the radioactive substances absorbed and assimilated by the human body account for the major part of natural radiation exposure. Medicine is the chief source of artificial radiation exposure. Of the remaining sources of exposure, the only one of any significance is the ...
Radioactivity in the Classroom Radioactive decay is a natural process with everyday consequences for society. The necessary concepts of exponential decay and half-life usually require so... EA Hughes,A Zalts - 《Journal of Chemical Education》 被引量: 7发表: 2000年 ...
g-radiation (g) is the process of spontaneous emission by a nucleus of a photon (several photons) having energies referred to the ionizing radiation. Transitions of nuclei from long-living states (with an average lifetime of more than 100 ns) to lower energy levels are called isomeric transit...
calledradioactivity. The energy and particles which are released during the decomposition process are called radiation. When unstable nuclei decompose in nature, the process is referred to as natural radioactivity. When the unstable nuclei are prepared in the laboratory, the decomposition is called ...