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Topics related to "Californium"

californium
californium [from California ], artificially produced, radioactive metallic chemical element; symbol Cf; at. no. 98; mass no. of most stable isotope 251; m.p. about 900°C; b.p. about 1,470°C; density unknown; valence +3. Californium is a member of the actinide series of chemical elements... Read more
Cf
Cf symbol for the element californium . ... Read more
lawrencium
lawrencium artificially produced radioactive chemical element; symbol Lr; at. no. 103; mass number of most stable isotope 262; m.p. about 1,627°C; b.p. and sp. gr. unknown; valence +3. Lawrencium is the last member of the actinide series of elements found in Group 3 of the periodic table . L... Read more
actinide series
actinide series a series of radioactive metallic elements in Group 3 of the periodic table . Members of the series are often called actinides, although actinium (at. no. 89) is not always considered a member of the series. The series always includes the 14 elements with atomic numbers 90 through... Read more
Glenn Theodore Seaborg
Glenn Theodore Seaborg , 1912-99, American chemist, b. Ishpeming, Mich., grad. Univ. of California at Los Angeles, 1934, Ph.D. Univ. of California at Berkeley, 1937. In 1939, he began teaching at Berkeley, where he became professor of chemistry (1945) and chancellor of the university (1958). During ... Read more
seaborgium
seaborgium , artificially produced radioactive chemical element; symbol Sg; at. no. 106; mass number of most stable isotope 266; m.p., b.p., sp. gr., and valence unknown. Situated in Group 6 of the periodic table , it is expected to have properties similar to those of tungsten . The discovery... Read more
transuranium elements
transuranium elements in chemistry, radioactive elements with atomic numbers greater than that of uranium (at. no. 92). All the transuranium elements of the actinide series were discovered as synthetic radioactive isotopes at the Univ. of California at Berkeley or at Argonne National Laboratory... Read more

Encyclopedia entries related to "Californium"

californium
Book article from: The Columbia Encyclopedia, Sixth Edition californium [from California ], artificially produced...C; density unknown; valence +3. Californium is a member of the actinide series of...of lanthanum . Eighteen isotopes of californium are known, with half-lives ranging...
Periodic Table of the Elements: Californium
Book article from: The Columbia Encyclopedia, Sixth Edition Periodic Table of the Elements: Californium Periodic Table of the Elements: Californium Atomic Number: 98 Atomic Symbol: Cf Californium Atomic Weight: (251) Electron Configuration: 2 · 8 ·...
seaborgium
Book article from: The Columbia Encyclopedia, Sixth Edition ...1974, an American research team led by A. Ghiorso at the Lawrence Berkeley National Laboratory reported bombarding californium-249 atoms with oxygen-18 ions to create an isotope with mass number 263 and a half-life of 0.9 sec. Because their...
lawrencium
Book article from: The Columbia Encyclopedia, Sixth Edition ...oslash;rn Sikkeland, Almon E. Larsh, and Robert M. Latimer at the Univ. of California at Berkeley; a sample of californium isotopes was bombarded with a beam of boron nuclei from the heavy-ion linear accelerator. The resulting isotope, lawrencium...
dubnium
Book article from: The Columbia Encyclopedia, Sixth Edition ...to confirm the Dubna group's results, they had synthesized an isotope of element 105 by another route. They bombarded californium-249 atoms with nitrogen-15 ions to create an isotope with mass number 260 and a half-life of 1.6 sec. Disputing...
actinide series
Book article from: The Columbia Encyclopedia, Sixth Edition ...of increasing atomic number) thorium , protactinium , uranium , neptunium , plutonium , americium , curium , berkelium , californium , einsteinium , fermium , mendelevium , nobelium , and lawrencium . Thorium and uranium are the only actinides found in the...
Actinides
Encyclopedia entry from: UXL Encyclopedia of Science ...heavier elements were created: americium (number 95) and curium (number 96) in 1944; berkelium (number 97) in 1949; californium (number 98) in 1950; einsteinium (number 99) and fermium (number 100) in 1952; mendelevium (number 101) in 1955...
chemical elements
Book article from: World Encyclopedia ...1826 Cadmium Cd 48 112.40 2 320.9 765 1817 Caesium Cs 55 132.9054 1 284 678 1860 Calcium Ca 20 40.08 2 839 1484 1808 Californium Cf 98 (251) ―― ―― ―― 1950 Carbon C 6 12.011 2.4 3550...
ununoctium
Book article from: The Columbia Encyclopedia, Sixth Edition ...California collaborated in the discovery of ununoctium in experiments conducted in 2002 and 2005. They bombarded atoms of californium -249 with ions of calcium -48. Among the products of the bombardments were three atoms of ununoctium-294 (one atom...
transuranium elements
Book article from: The Columbia Encyclopedia, Sixth Edition ...National Laboratory; in order of increasing atomic number they are neptunium , plutonium , americium , curium , berkelium , californium , einsteinium , fermium , mendelevium , nobelium , and lawrencium . Of these only neptunium and plutonium occur in nature...

Dictionary entries related to "Californium"

californium
Book article from: The Oxford Pocket Dictionary of Current English cal·i·for·ni·um / ˌkaləˈfôrnēəm / • n. the chemical element of atomic number 98, a radioactive metal of the actinide series. (Symbol: Cf )
lawrencium
Book article from: The Oxford Pocket Dictionary of Current English ...x259;m / • n. the chemical element of atomic number 103, a radioactive metal of the actinide series. Lawrencium does not occur naturally and was first made by bombarding californium with boron nuclei. (Symbol: Lr )
Cf
Book article from: The Oxford Pocket Dictionary of Current English Cf • symb. the chemical element californium.

Related newspaper, magazine, and trade journal articles from HighBeam Research

Rare fission processes.(research on splitting of californium-252)(Brief Article)
Magazine article from: Science News; 5/2/1998; ; 469 words ; ...in addition to normal spontaneous fission, the isotope californium-252 occasionally splits in two in such a way that no neutrons...fission events. Ramayya and his coworkers have also found that californium-252 sometimes breaks into three fragments--two of moderate...
Calcium + Californium = element 118, scientists say
Newspaper article from: Daily Breeze; 10/17/2006; ; 479 words ; ...created a new superheavy element, atomic No. 118. Scientists said they smashed together calcium with the artificial element Californium to make an atom with 118 protons in its nucleus. The new element lasted for just one millisecond, but it was the heaviest...
NRC EVENT NOTIFICATION FOR JULY 30: AGREEMENT STATE REPORT INVOLVING THE LOSS OF A CALIFORNIUM-252 SOURCE
News Wire article from: US Fed News Service, Including US State News; 7/31/2009; 700+ words ; ...information is a portion of an email forwarded by the State of North Carolina: "TUNL staff today formally reported the loss of a Californium-252 source: "(1) Source description: 3.4 microcuries of Cf-252 with an active layer of 8 mm diameter on the platinum...
Isotron enters license agreement to market neutron brachytherapy.
Newspaper article from: Medical Devices & Surgical Technology Week; 12/26/2004; 700+ words ; ...deliver a highly concentrated dose of californium-252 neutrons to the site of a tumor...treatment is the miniaturization of the californium-252 source, which allows physicians...patents detailing how to make miniature californium-252 sources for neutron brachytherapy...

Newspaper article from: News Sun, The (Waukegan, IL); 3/17/2006; 417 words ; ...In 1950: scientists at the University of California at Berkeley announced they had created a new radioactive element, "californium." In 1956: 50 years ago, comedian Fred Allen died in New York City at age 61. In 1958: the U.S. Navy launched the...
ORNL, Georgia's Isotron develop promising new cancer treatment.
Newspaper article from: Biotech Week; 2/19/2003; 700+ words ; ...deliver a highly concentrated dose of californium-252 neutrons to the site of a tumor...cancer cells as effectively as do the californium-252 neutrons. Cancers most resistant...success is the miniaturization of the californium-252 source, which allows physicians...
Story tips from the DOE's Oak Ridge National Laboratory, Dec. 2008.
Newspaper article from: NewsRx Science; 1/11/2009; 700+ words ; ...Program. ISOTOPES -- Banner year . . . Californium-252 and actinium-225 generated half...represents a $1 million increase from 2007. Californium-252 -- used as a start-up source...accounted for more than $500,000. The Californium-252 is produced at ORNL's High Flux...
ORNL, Georgia's Isotron develop promising new cancer treatment.( Department of Energy's Oak Ridge National Laboratory)(neutron brachytherapy)
Newspaper article from: Cancer Weekly; 2/18/2003; 700+ words ; ...deliver a highly concentrated dose of californium-252 neutrons to the site of a tumor...cancer cells as effectively as do the californium-252 neutrons. Cancers most resistant...success is the miniaturization of the californium-252 source, which allows physicians...
Back on the Table? Element 118 is served up again.
Magazine article from: Science News; 10/21/2006; ; 700+ words ; ...different materials--an isotope of californium and calcium ions. During each of two...runs, the research team pummeled the californium with 10 million trillion calcium ions...the second run in 2005--atoms of californium and calcium combined to form the new...

Newspaper article from: Herald News, The (Joliet, IL); 3/17/2006; 419 words ; ...1950: Scientists at the University of California at Berkeley announced that they had created a new radioactive element, "californium." 1958: The U.S. Navy launched the Vanguard I satellite. 1966: A U.S. midget submarine located a missing hydrogen...