24 relations: Actinium, Age of the universe, Alpha decay, Brookhaven National Laboratory, Carbon-14, Cluster decay, CRC Handbook of Chemistry and Physics, CRC Press, Decay product, Electron capture, Isotope, Isotopes of neptunium, Isotopes of thorium, John Wiley & Sons, Nanosecond, National Nuclear Data Center, Neutron, Nuclear isomer, Nuclear medicine, Nuclear Physics (journal), Proton, Pure and Applied Chemistry, Standard atomic weight, Uranium-235.
Actinium is a chemical element with symbol Ac and atomic number 89.
In physical cosmology, the age of the universe is the time elapsed since the Big Bang.
Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or 'decays' into an atom with a mass number that is reduced by four and an atomic number that is reduced by two.
Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratory located in Upton, New York, on Long Island, and was formally established in 1947 at the site of Camp Upton, a former U.S. Army base.
Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.
Cluster decay, also named heavy particle radioactivity or heavy ion radioactivity, is a type of nuclear decay in which an atomic nucleus emits a small "cluster" of neutrons and protons, more than in an alpha particle, but less than a typical binary fission fragment.
The CRC Handbook of Chemistry and Physics is a comprehensive one-volume reference resource for science research, currently in its 98th edition (with 2560 pages, June 23, 2017, Editor-in-Chief John R. Rumble).
The CRC Press, LLC is a publishing group based in the United States that specializes in producing technical books.
In nuclear physics, a decay product (also known as a daughter product, daughter isotope, radio-daughter, or daughter nuclide) is the remaining nuclide left over from radioactive decay.
Electron capture (K-electron capture, also K-capture, or L-electron capture, L-capture) is a process in which the proton-rich nucleus of an electrically neutral atom absorbs an inner atomic electron, usually from the K or L electron shell.
Isotopes are variants of a particular chemical element which differ in neutron number.
Neptunium (93Np) is usually considered an artificial element, although trace quantities are found in nature, so thus a standard atomic weight cannot be given.
Although thorium (90Th) has 6 naturally occurring isotopes, none of these isotopes are stable; however, one isotope, 232Th, is relatively stable, with a half-life of 1.405×1010 years, considerably longer than the age of the Earth, and even slightly longer than the generally accepted age of the universe.
John Wiley & Sons, Inc., also referred to as Wiley, is a global publishing company that specializes in academic publishing.
A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10 seconds.
The National Nuclear Data Center is an organization based in the Brookhaven National Laboratory that acts as a repository for data regarding nuclear chemistry, such as nuclear structure, decay, and reaction data, as well as historical information regarding previous experiments and literature.
A nuclear isomer is a metastable state of an atomic nucleus caused by the excitation of one or more of its nucleons (protons or neutrons).
Nuclear medicine is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease.
Nuclear Physics is a peer-reviewed scientific journal published by Elsevier.
Pure and Applied Chemistry (abbreviated Pure Appl. Chem.) is the official journal for the International Union of Pure and Applied Chemistry (IUPAC).
The standard atomic weight (Ar, standard, a relative atomic mass) is the atomic weight (Ar) of a chemical element, as appearing and met in the earthly environment.
Uranium-235 (235U) is an isotope of uranium making up about 0.72% of natural uranium.
Actinium-206, Actinium-207, Actinium-208, Actinium-209, Actinium-210, Actinium-211, Actinium-212, Actinium-213, Actinium-214, Actinium-215, Actinium-216, Actinium-217, Actinium-218, Actinium-219, Actinium-220, Actinium-221, Actinium-222, Actinium-223, Actinium-224, Actinium-225, Actinium-226, Actinium-227, Actinium-228, Actinium-229, Actinium-230, Actinium-231, Actinium-232, Actinium-233, Actinium-234, Actinium-235, Actinium-236.