Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Nuclear_isomer> ?p ?o }
- Nuclear_isomer abstract "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). \"Metastable\" refers to the fact that these excited states have half-lives more than 100 to 1000 times the half-lives of the excited nuclear states that decay with a \"prompt\" half life (ordinarily on the order of 10−12 seconds). As a result, the term \"metastable\" is usually restricted to refer to isomers with half-lives of 10−9 seconds or longer. Some sources recommend 5 × 10−9 s to distinguish the metastable half life from the normal \"prompt\" gamma emission half life.Occasionally the half-lives are far longer than this, and can last minutes, hours, years, or in the singular case of 180m73Ta, so long that it has never been observed to decay (at least 1015 years). Sometimes, the gamma decay from a metastable state is given the special name of an isomeric transition, but save for the long-lived nature of the meta-stable parent nuclear isomer, this process resembles shorter-lived gamma decays in all external aspects. The longer lives of nuclear isomers (metastable states) are often due to the larger degree of nuclear spin change which must be involved in their gamma emission to reach the ground state. This high spin change causes these decays to be so-called forbidden transitions, and thus delayed. Other reasons for delay in emission, such as low or high available decay energy, also have effects on decay half life.The first nuclear isomer and decay-daughter system (uranium X2/uranium Z, now known as 234m91Pa/23491Pa) was discovered by Otto Hahn in 1921.".
- Nuclear_isomer wikiPageExternalLink he.pdf.
- Nuclear_isomer wikiPageExternalLink 21_1.shtml.
- Nuclear_isomer wikiPageExternalLink Hafnium_isomer_triggering.htm.
- Nuclear_isomer wikiPageExternalLink isomerPubl.htm.
- Nuclear_isomer wikiPageExternalLink quantum.
- Nuclear_isomer wikiPageID "183256".
- Nuclear_isomer wikiPageLength "22033".
- Nuclear_isomer wikiPageOutDegree "102".
- Nuclear_isomer wikiPageRevisionID "699016218".
- Nuclear_isomer wikiPageWikiLink Actinide.
- Nuclear_isomer wikiPageWikiLink Age_of_the_universe.
- Nuclear_isomer wikiPageWikiLink Alpha_particle.
- Nuclear_isomer wikiPageWikiLink American_football.
- Nuclear_isomer wikiPageWikiLink Americium.
- Nuclear_isomer wikiPageWikiLink Angular_momentum.
- Nuclear_isomer wikiPageWikiLink Atom.
- Nuclear_isomer wikiPageWikiLink Atomic_battery.
- Nuclear_isomer wikiPageWikiLink Atomic_nucleus.
- Nuclear_isomer wikiPageWikiLink Beta_decay.
- Nuclear_isomer wikiPageWikiLink Beta_particle.
- Nuclear_isomer wikiPageWikiLink Category:Nuclear_physics.
- Nuclear_isomer wikiPageWikiLink DARPA.
- Nuclear_isomer wikiPageWikiLink Electron.
- Nuclear_isomer wikiPageWikiLink Electronvolt.
- Nuclear_isomer wikiPageWikiLink Excited_state.
- Nuclear_isomer wikiPageWikiLink Fluorescence.
- Nuclear_isomer wikiPageWikiLink Forbidden_mechanism.
- Nuclear_isomer wikiPageWikiLink Gamma_ray.
- Nuclear_isomer wikiPageWikiLink Gram.
- Nuclear_isomer wikiPageWikiLink Ground_state.
- Nuclear_isomer wikiPageWikiLink Hafnium.
- Nuclear_isomer wikiPageWikiLink Half-life.
- Nuclear_isomer wikiPageWikiLink Holmium.
- Nuclear_isomer wikiPageWikiLink Induced_gamma_emission.
- Nuclear_isomer wikiPageWikiLink Internal_conversion.
- Nuclear_isomer wikiPageWikiLink Isomeric_shift.
- Nuclear_isomer wikiPageWikiLink Isotope.
- Nuclear_isomer wikiPageWikiLink Isotopes_of_hafnium.
- Nuclear_isomer wikiPageWikiLink Isotopes_of_holmium.
- Nuclear_isomer wikiPageWikiLink Isotopes_of_protactinium.
- Nuclear_isomer wikiPageWikiLink Isotopes_of_tantalum.
- Nuclear_isomer wikiPageWikiLink Isotopes_of_thorium.
- Nuclear_isomer wikiPageWikiLink JASON_(advisory_group).
- Nuclear_isomer wikiPageWikiLink Laser.
- Nuclear_isomer wikiPageWikiLink Lutetium.
- Nuclear_isomer wikiPageWikiLink Mass_number.
- Nuclear_isomer wikiPageWikiLink Metastability.
- Nuclear_isomer wikiPageWikiLink Microsecond.
- Nuclear_isomer wikiPageWikiLink Nanosecond.
- Nuclear_isomer wikiPageWikiLink Neutron.
- Nuclear_isomer wikiPageWikiLink Nuclear_fission.
- Nuclear_isomer wikiPageWikiLink Nuclear_fusion.
- Nuclear_isomer wikiPageWikiLink Nuclear_reaction.
- Nuclear_isomer wikiPageWikiLink Nuclear_shell_model.
- Nuclear_isomer wikiPageWikiLink Nucleon.
- Nuclear_isomer wikiPageWikiLink Orders_of_magnitude_(power).
- Nuclear_isomer wikiPageWikiLink Otto_Hahn.
- Nuclear_isomer wikiPageWikiLink Photoelectric_effect.
- Nuclear_isomer wikiPageWikiLink Photon.
- Nuclear_isomer wikiPageWikiLink Plutonium.
- Nuclear_isomer wikiPageWikiLink Proton.
- Nuclear_isomer wikiPageWikiLink Quantum_mechanics.
- Nuclear_isomer wikiPageWikiLink Radioactive_decay.
- Nuclear_isomer wikiPageWikiLink Rotational_symmetry.
- Nuclear_isomer wikiPageWikiLink Rugby_football.
- Nuclear_isomer wikiPageWikiLink Silver.
- Nuclear_isomer wikiPageWikiLink Spheroid.
- Nuclear_isomer wikiPageWikiLink Spin_(physics).
- Nuclear_isomer wikiPageWikiLink Spontaneous_fission.
- Nuclear_isomer wikiPageWikiLink Stimulated_emission.
- Nuclear_isomer wikiPageWikiLink Supernova.
- Nuclear_isomer wikiPageWikiLink TNT_equivalent.
- Nuclear_isomer wikiPageWikiLink Tantalum.
- Nuclear_isomer wikiPageWikiLink Technetium.
- Nuclear_isomer wikiPageWikiLink Technetium-99m.
- Nuclear_isomer wikiPageWikiLink Treaty_on_the_Non-Proliferation_of_Nuclear_Weapons.
- Nuclear_isomer wikiPageWikiLink Tungsten.
- Nuclear_isomer wikiPageWikiLink File:Lutetium_nuclear_isomer_energy_levels.gif.
- Nuclear_isomer wikiPageWikiLinkText "Hf-178m2 isomer".
- Nuclear_isomer wikiPageWikiLinkText "Nuclear isomer".
- Nuclear_isomer wikiPageWikiLinkText "Nuclear isomer#Decay processes".
- Nuclear_isomer wikiPageWikiLinkText "Nuclear_isomer#Metastable_isomers".
- Nuclear_isomer wikiPageWikiLinkText "Ta-180m isomer".
- Nuclear_isomer wikiPageWikiLinkText "excited nuclear states".
- Nuclear_isomer wikiPageWikiLinkText "excited state".
- Nuclear_isomer wikiPageWikiLinkText "fission isomer".
- Nuclear_isomer wikiPageWikiLinkText "isomer state".
- Nuclear_isomer wikiPageWikiLinkText "isomer".
- Nuclear_isomer wikiPageWikiLinkText "isomeric state".
- Nuclear_isomer wikiPageWikiLinkText "isomeric states".
- Nuclear_isomer wikiPageWikiLinkText "isomeric transition".
- Nuclear_isomer wikiPageWikiLinkText "isomers".
- Nuclear_isomer wikiPageWikiLinkText "meta state".
- Nuclear_isomer wikiPageWikiLinkText "meta states".
- Nuclear_isomer wikiPageWikiLinkText "metastable excited states".
- Nuclear_isomer wikiPageWikiLinkText "metastable isomer".
- Nuclear_isomer wikiPageWikiLinkText "metastable isomers".
- Nuclear_isomer wikiPageWikiLinkText "metastable isotope".
- Nuclear_isomer wikiPageWikiLinkText "metastable isotopes".