Independent Verification of Element 114 Production in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mn>48</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Pu</mml:mi><mml:mprescripts/><mml:none/><mml:mn>242</mml:mn></mml:mmultiscripts></mml:math>Reaction
L. StavsetraNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAΚ. Ε. GregorichNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAJ. DvořákNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAPaul A. EllisonDepartment of Chemistry, University of California, Berkeley, Berkeley, California 94720, USAI. DragojevićNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAMitch A. GarciaNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAH. NitscheNuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
2009lv
ABI
Аннотация
Independent verification of the production of element 114 in the reaction of 244-MeV ;{48}Ca with ;{242}Pu is presented. Two chains of time- and position-correlated decays have been assigned to ;{286}114 and ;{287}114. The observed decay modes, half-lives, and decay energies agree with published results. The measured cross sections at a center-of-target energy of 244 MeV for the ;{242}Pu(;{48}Ca,3-4n);{287,286}114 reactions were 1.4_{-1.2};{+3.2} pb each, which are lower than the reported values.
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