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{{Short description|Ratio of neutrons to protons in an atomic nucleus}} ...larger nuclei must be lower than in stable smaller nuclei where more pairs of protons have appreciable short-range nuclear force attractions. ...

...which can undergo further [[radioactive decay]] while lowering the [[pH]] of a solution.<ref name=":0" /> [[File:Fr Decay chain Uranium 238.svg|thumb|Uranium-238 Decay Chain]] ...

{{Short description|Gas centrifuge designed to enrich uranium-235}} ...any one person's name, it was known (at least at a somewhat earlier stage of development) as a '''Kamenev centrifuge''' (after Evgeni Kamenev).<ref name ...

{{Short description|Different atoms of the same element}} {{About|the atomic variants of chemical elements|other uses|Isotope (disambiguation)}} ...

...tegrates as the reaction proceeds, and this stops the reaction, so the use of a tamper makes for a longer-lasting, more energetic and more efficient expl ...cial purposes like emitting large amounts of X-rays or altering the amount of [[nuclear fallout]]. ...

...Various methods are employed to purify and identify the [[radioelement]] of interest through chemical methods and sample measurement techniques. ...active tracer|tracers]], and measure radionuclides in many different types of samples.<ref>Krane, K.S. ''Introductory Nuclear Physics'', 1988, John Wiley ...

...slightly volatile element, potassium (K), to a highly refractory element, uranium (U).}} ...U ratio helps explain the evolution of the planetary system and the origin of Earth's moon. ...

<!-- [[Image:MKER Beschriftet en.PNG |thumb|Reactor hall of an MKER-1500]]--> ...p://world-nuclear.org/info/inf45.html |url-status=dead }}</ref> No reactor of the MKER-800 type (and presumably other types) will continue to be develope ...

{{Short description|Artefact of ancient iron production}} ...lt=Archaeometallurgical slag is slag discovered and studied in the context of archaeology]] ...

{{Short description|Ionizing radiation particle of two protons and two neutrons}} ...thor-link7=Peter Chrisp}}</ref> They are generally produced in the process of [[alpha decay]] but may also be produced in different ways. Alpha particles ...

.../cstsp.aaas.org/files/Complete.pdf| title = Nuclear Forensics: Role, State of the Art, and Program Needs| editor = May, Michael| isbn=978-0-87168-720-3}} ...enter - Definition and Role of Nuclear Forensics | publisher=US Department of Homeland Security | accessdate=2013-05-14}}</ref> ...

...t4=Boullis |first4=Bernard |title=Recycling the Actinides, The Cornerstone of Any Sustainable Nuclear Fuel Cycles |journal=Procedia Chemistry |date=2012 ...=Vienna |isbn=978-92-0-108417-0 |edition=2018}}</ref> At the back-end step of the [[nuclear fuel cycle]], two spent fuel management options could be pote ...

{{Short description|Radioactive isotope of Americium}} ...l removal of americium-241 from reworked plutonium (e.g., during reworking of [[plutonium pit]]s) may be required in some cases. ...

{{Short description|Method of geochemical research}} ...h's history of formation and [[Planetary differentiation|differentiation]] of the solid Earth into layers. ...

{{Short description|Core of an atom; composed of nucleons (protons and neutrons)}} ...example, the [[ground state]]), each nucleon can be said to occupy a range of locations.]] ...

{{Short description|Chemical compound of the form –O–MoO₂–O–}} [[Image:Molybdate.png|thumb|150px|Structure of molybdate]] ...

| alma_mater = [[Saint Petersburg Imperial University]], [[University of Göttingen]] | prizes = {{Hero of Socialist Labour}}, {{Order of Lenin}}, Medal "For Valiant Labour in the Great Patriotic War 1941–1945", { ...

...ring the decay of [[carbon-14]] ({{chem|14|C}}), a [[radioactive isotope]] of carbon. Developed in the late 1940s, the technique has been widely used in ...iocarbon dating calculations. Scientists have identified four main sources of error: ...

{{Short description|Science of analyzing the age of zircons}} ...is a common constituent of most sands. Zircons contain trace amounts of [[uranium]] and [[thorium]] and can be dated using several modern analytical techniqu ...

.... Hahn was awarded the 1944 [[Nobel Prize in Chemistry]] for the discovery of nuclear fission. ...and Frisch observed this. By analogy with the [[fission (biology)|division of biological cells]], he named the process "fission". ...