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Topic: Transuranic element

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	ELEMENT - Definition
		Note: The elements are naturally classified in several families or groups, as the group of the alkaline elements, the halogen group, and the like.
		When the elements are tabulated in the order of their ascending atomic weights, the arrangement constitutes the series of the Periodic law of Mendelejeff.
		Many of the elements with which we are familiar, as hydrogen, carbon, iron, gold, etc., have been recognized, by means of spectrum analysis, in the sun and the fixed stars.
	www.hyperdictionary.com /dictionary/element (611 words)

	Glossary
		Element: A chemical substance that cannot be divided into simple substances by chemical means; atomic species with same number of protons.
		Nuclide: elemental matter made up of atoms with identical nuclei, therefore with the same atomic number and the same mass number (equal to the sum of the number of protons and neutrons).
		Transuranic element: A very heavy element formed artificially by neutron capture and possibly subsequent beta decay(s).
	www.world-nuclear.org /info/inf51.html (2742 words)

	Elements 116 and 118 Discovered at Berkeley Lab
		Although both new elements almost instantly decay into other elements, the sequence of decay events is consistent with theories that have long predicted an "island of stability" for nuclei with approximately 114 protons and 184 neutrons.
		Transuranic elements in the periodic table can only be synthesized in nuclear reactors or particle accelerators.
		Elements 118 and 116 were discovered by accelerating a beam of krypton-86 ions to an energy of 449 million electron volts and directing the beam into targets of lead-208.
	www.lbl.gov /Science-Articles/Archive/elements-116-118.html (1061 words)

	DOE - Global Nuclear Energy Partnership
		It is the smallest particle of an element having all the chemical properties of the element.
		An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation.
		The transuranic elements are incorporated into fuel for fast reactors and then destroyed while the reactor generates electricity.
	www.gnep.energy.gov /gnepGlossaryOfTerms.html (1741 words)

	Related WordNet synsets for SUMO concept ElementalSubstance
		a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
		a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
		a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold
	icosym-nt.cvut.cz /kifb/wordnet/_elemental_substance.html (1200 words)

	Periodic Table Displays
		The collection excludes the artificially-produced transuranic elements (atomic numbers 93 to 118), which are all highly radioactive and mostly very short-lived.
		The non-radioactive elements are presented in their pure uncombined form: the majority are metals, two are liquids (bromine and mercury) and ten are gases.
		The chemical symbol for each element is attractively engraved onto its bottle cap and colour-coded to indicate the group in the periodic table to which the element belongs.
	www.element-collection.com /html/faq.html (2137 words)

	Discovering transuranic elements at Dubna - heavy element research in Soviet Union Science News - Find Articles
		The transuranics are all inherently unstable, subject to spontaneous fission or radioactive decay -- as is uranium, atomic number 92, the heaviest element known to exist in detectable amounts on earth.
		The key to finding a new transuranic element is the observation of a source of nuclear fission or of alpha-particle decay that does not correspond to any nuclear species already known.
		Such activity can be attributed to the particular transuranic element being sought, and on this basis several claims have been made, including Dubna's claim to element 110, as related in the previously mentioned paper by Oganessian et al.
	findarticles.com /p/articles/mi_m1200/is_n5_v133/ai_6342587?lstpn=article_results&lstpc=search&lstpr=external&lstprs=other&lstwid=1&lstwn=search_results&lstwp=body_middle (769 words)

	Glossary of terms
		Elements whose atoms have the same number of electrons and protons but a different number of neutrons.
		Ratio of the number of atoms of a given isotope of an element to the total number of atoms of this element contained in a material.
		The first transuranic elements are, in increasing order, neptunium, plutonium, americium and curium.
	www.cri.ca /nuclear_energy/datagb/lexique/lexique.htm (3291 words)

	Glossary (Site not responding. Last check: )
		A high-melting, lightweight, corrosion-resistant, rigid, steel-gray metallic element used as a moderator and reflector in nuclear reactors.
		An element that is a byproduct of the decay of uranium.
		All elements beyond uranium on the periodic table; that is, all elements with a number greater than 92.
	web.em.doe.gov /bemr96/glossary.html (3788 words)

	EHC -- Waste Isolation Pilot Plant Glossary
		Transuranic waste resulting from weapons research and development, the operation of naval reactors, the production of weapons material, the reprocessing of defense spent fuel, and the decommissioning of nuclear- powered ships and submarines.
		Permanent isolation of transuranic waste from the accessible environment with no intent of recovery; occurs when the WIPP repository is backfilled and sealed.
		Transuranic waste is produced during nuclear fuel assembly and during nuclear weapons research, production, and cleanup.
	www.nsc.org /ehc/guidebks/wippglos.htm (1207 words)

	Glossary (Site not responding. Last check: )
		The process whereby the nuclei of lighter elements, especially the isotopes of hydrogen (deuterium and tritium) combine to form the nucleus of a heavier element accompanied by the release of substantial amounts of energy.
		Metallic elements with high atomic weights (e.g., mercury, chromium, cadmium, arsenic, and lead) that can damage living things at low concentrations and tend to accumulate in the food chain.
		Waste contaminated with uranium-233 or transuranic elements having half-lives of over 20 years in concentrations more than 1 ten-millionth of a curie per gram of waste.
	web.em.doe.gov /takstock/glossary.html (1842 words)

	[No title]
		Radioactive metallic transuranic element, belongs to the actinoids.
		Dense silvery radioactive metallic transuranic element, belongs to the actinoids.
		Colorless radioactive gaseous element, belongs to the noble gases.
	reliant.teknowledge.com /DAML/Elements.owl (4749 words)

	Transuranium element - Wikipedia, the free encyclopedia
		In chemistry, transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92, the atomic number of uranium.
		Transuranic elements that have not been discovered, or have been discovered but are not yet officially named, use IUPAC's systematic element names.
		They are created through the bombardment of elements in a particle accelerator, for example the nuclear fusion of californium-249 and carbon-12 creates rutherfordium.
	en.wikipedia.org /wiki/Transuranic_element (1102 words)

	Home page:The Extended Periodic Table Of The Elements
		"Not every element of this new series would correspond to an actinide (or lanthanide) element on a one-to-one basis, and prediction of the chemistry of the members of the series is a complex problem.
		The difficulty arises partly because of uncertainty of the exact point at which the energetically similar 5g and 6f orbitals begin to fill and partly because calculations indicate that the 8p and 7d orbitals may be very close in energy to the 5g and 6f orbitals.
		The placement of the elements in the heaviest portion of the periodic table as shown in the [periodic table] is, therefore, probably also of only formal significance." Transuranium Elements, Encyclopaedia Britannica, 1999-2000, (Britannica.com).
	jeries.rihani.com (1271 words)

	Rutherfordium \| English \| Dictionary & Translation by Babylon
		Rutherfordium (IPA:), also called eka-hafnium, is a chemical element in the periodic table that has the symbol Rf and atomic number 104.
		This is a highly radioactive synthetic element whose most stable isotope is 265Rf with a half-life of approximately 13 hours.
		Rutherfordium is the first transactinide element and it is predicted to have chemical properties similar to hafnium.
	www.babylon.com /definition/Rutherfordium (135 words)

	Transuranic Element Production
		A transuranic element has more protons than uranium.
		In a nuclear >reactor that produces "transuranic" elements, neutrons are collided with the >uranium.
		So the mass of the nucleus stays about the same, but the >number of neutrons goes down by one and the number of protons goes up by >one.
	www.newton.dep.anl.gov /askasci/phy00/phy00094.htm (264 words)

	Einsteinium Summary
		The element was produced in trace amounts during the explosion of that bomb.
		Einsteinium is a synthetic element in the periodic table that has the symbol Es and atomic number 99.
		A metallic highly radioactive transuranic element (7th in the series) in the actinides, einsteinium is produced by bombarding plutonium with neutrons and was discovered in the debris of the first hydrogen bomb test.
	www.bookrags.com /Einsteinium (1335 words)

	Fermi Mistakenly Identifies Transuranics
		As a matter of fact, it has been shown' that a large number of elements (47 out of 68 examined until now) of any atomic weight could be activated, using neutron sources consisting of a small glass tube filled with beryllium powder and radon up to 800 millicuries.
		All the elements activated by this method with intensity large enough for a magnetic analysis of the sign of the charge of the emitted particles were found to give out only negative electrons.
		In two cases (bromine, iodine) the active element is an isotope of the bombarded element.
	dbhs.wvusd.k12.ca.us /webdocs/Chem-History/Fermi-transuranics-1934.html (1369 words)

	HSC Online
		Isotopes of an element are atoms of that element containing the same number of protons but different numbers of neutrons.
		Transuranic elements are elements with an atomic number above that of uranium with atomic number Z= 92.
		Transuranic elements from atomic number 96 and up are all made by accelerating a small nucleus (such as He, B or C) in a charged particle accelerator to collide with a heavy nucleus (often of a previously made transuranic element) target.
	hsc.csu.edu.au /chemistry/core/identification/chem925/925net.html (1229 words)

	General Chemistry Online: Glossary:
		Elements with incomplete f subshells are sometimes called "inner transition elements".
		An element with an atomic number higher than 92 (uranium's atomic number).
		Transuranium elements are unstable and occur in extremely low concentrations (if at all) in nature.
	antoine.frostburg.edu /chem/senese/101/glossary/t.shtml (1088 words)

	neptunium - Search Results - MSN Encarta
		Neptunium is one of the transuranium elements in the actinide series...
		Neptunium is an element in the periodic table that has the symbol Np and atomic number 93.
		A silvery radioactive metallic element, neptunium is the first transuranic element and belongs to the...
	encarta.msn.com /neptunium.html (174 words)

	IEER Report: Containing the Cold War Mess
		Transuranic wastes were defined as containing greater than 10 nanocuries per gram of transuranic elements with half-lives greater than 20 years.
		Official data on the volume, mass, and radioactivity of buried transuranic waste and transuranic soil are inconsistent and contradictory.
		Transuranic elements are so called because they have atomic numbers higher than that for uranium, which is the last element in the periodic table that occurs in nature in significant quantities.
	www.ieer.org /reports/cleanup/summary.html (8652 words)

	C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - AMERICIUM
		One of the members of the group, Tom Morgan, dubbed the two elements "pandemonium" and "delirium." Morgan's nicknames encompass the frustration of the group during their attempts to demonstrate the chemical proof of the elements' existence.
		Interestingly, one listener suggested element 95 be named "curium" and element 96 "einsteinium." Those suggested names were eventually applied to elements 96 and 99, respectively, so some good ideas did come from the radio solicitation.
		In the end, element 95 was named "americium" because of its position in the periodic table.
	pubs.acs.org /cen/80th/print/americiumprint.html (860 words)

	Polite Dissent » Picture Quiz (and Chemistry Lecture): comics, medicine, and medical comics
		Well, “Transuranic Iron” might mean the next element after Uranium that falls into Group 8, and thus might be expected to be chemically like iron.
		I’m with Jeff R. the best explanation (other than an egregious goof up) is that it’s a transuranic element with iron-like properties, commonly referred to as ‘transuranic iron’, in the universe where it exists by those who actually know it exists, although it is in fact of course not iron at all.
		P.S. Elements, as chemical units anyway, are composed of molecules,just molecules whose atoms are all the same element.
	politedissent.com /archives/775 (744 words)

	Anything with an atomic number greater...
		We generally call the transuranics "man-made" elements because they are normally not found in nature.
		Uranium is also fissionable, and elements as light as atomic number 88 (radium) may undergo fission (but not very efficiently).
		So an atom with one proton (regardless of how many neutrons it has) is hydrogen, an atom with two protons is helium, etc. So if I want to create atoms with, say 10 protons, I have to figure out a way to get ten protons together along with enough neutrons to keep those protons together.
	education.jlab.org /qa/transuranic_01.html (1281 words)

	Glossary
		Activation product: : A radioactive isotope of an element (eg in the steel of a reactor core) which has been created by neutron bombardment.
		It may be spontaneous but usually is due to a nucleus absorbing a neutron and thus becoming unstable.
		Half-life: The period required for half of the atoms of a particular radioactive isotope to decay and become an isotope of another element.
	www.uic.com.au /nip30.htm (2713 words)

	FX Claim Uran (Site not responding. Last check: )
		A judgement of 0.50 to both YES and NO will be given if an element is discovered with a halflife of more than one year, but not one million years.
		A summary judgment on the basis of a rediscovery of a previously known stable transuranic element is explicitly ruled out.
		FAQ: if two or more such elements are discovered by the due date, the first one reported (in the aforementioned publication, even if they are reported in the same article) will be used to determine the amount of the payout.
	www.ideosphere.com /fx-bin/Claim?claim=Uran (372 words)

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