decay by positron emission
71P-process — The term p process (p is for proton) is used in two ways in the scientific literature concerning the astrophysical origin of the elements (nucleosynthesis). Originally it referred to a proton capture process which is the source of certain,… …
72Long-lived fission product — Long lived fission products are radioactive materials with a long half life (more than 200,000 years) produced by nuclear fission. Contents 1 Evolution of radioactivity in nuclear waste 1.1 Short term 1.2 Medium lived fission products …
73Neon-burning process — The neon burning process is a set of nuclear fusion reactions that take place in massive stars (at least 8 Solar masses). Neon burning requires high temperatures and densities (around 1.2×109 K or 100 KeV and 4×109 kg/m3). At such high… …
74Oxygen-burning process — The oxygen burning process is a set of nuclear fusion reactions that take place in massive stars that have used up the lighter elements in their cores. It occurs at temperatures around 1.5×109 K / 130 keV and densities of 1010 kg/m3. The… …
75Iodine-124 — or 124I is an isotope of iodine. This isotope is not stable and therefore is radioactive, also called a radioisotope. It has a half life of 4.18 days. Modes of Decay: 74.4% electron capture, 25.6% positron emission. 124I decays to… …
76Germanium — (pronEng|dʒɚˈmeɪniəm) is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, silver white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Germanium has five naturally… …
77Nuclear transmutation — is the conversion of one chemical element or isotope into another. In other words, atoms of one element can be changed into atoms of other element by transmutation . This occurs either through nuclear reactions (in which an outside particle… …
78Potassium-argon dating — or K Ar dating is a radiometric dating method used in geochronology and archeology. It is based on measuring the products of the radioactive decay of potassium (K), which is a common element found in materials such as micas, clay minerals, tephra …
79Nuclear reactor physics — See also: Critical mass Nuclear reactor physics is the branch of science that deals with the study and application of chain reaction to induce controlled rate of fission for energy in reactors. Most nuclear reactors use a chain reaction to induce …
80Radioligand — A radioligand is a radioactive biochemical substance (in particular, a ligand) that is used for diagnosis or for research oriented study of the receptor systems of the body.In a neuroimaging application the radioligand is injected into the… …
