Preliminary measurements of B{sup 0} and B{sup +} lifetimes at SLD

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Hydrolysis and carbonate complexation reactions were examined for NpO{sub 2}{sup 2+} and NpO{sub 2}{sup +} ions by a variety of techniques including potentiometric titration, UV-Vis-NIR and NMR spectroscopy. The equilibrium constant for the reaction 3NpO{sub 2}(CO{sub 3}){sub 3}{sup 4+} + 3H{sup +} {rightleftharpoons} (NpO{sub 2}){sub 3}(CO{sub 3}){sub 6}{sup 6{minus}} + 3HCO{sub 3}{sup {minus}} was determined to be logK = 19.7 ({plus_minus}0.8) (I = 2.5 m). {sup 17}O NMR spectroscopy of NpO{sub 2}{sup n+} ions (n = 1,2) reveals a readily observable {sup 17}O resonance for n = 2, but not for n = 1. The first hydrolysis constant for NpO{sub ... continued below

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11 p.

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SLD Collaboration August 1, 1995.

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Hydrolysis and carbonate complexation reactions were examined for NpO{sub 2}{sup 2+} and NpO{sub 2}{sup +} ions by a variety of techniques including potentiometric titration, UV-Vis-NIR and NMR spectroscopy. The equilibrium constant for the reaction 3NpO{sub 2}(CO{sub 3}){sub 3}{sup 4+} + 3H{sup +} {rightleftharpoons} (NpO{sub 2}){sub 3}(CO{sub 3}){sub 6}{sup 6{minus}} + 3HCO{sub 3}{sup {minus}} was determined to be logK = 19.7 ({plus_minus}0.8) (I = 2.5 m). {sup 17}O NMR spectroscopy of NpO{sub 2}{sup n+} ions (n = 1,2) reveals a readily observable {sup 17}O resonance for n = 2, but not for n = 1. The first hydrolysis constant for NpO{sub 2}{sup +} was studied as a function of temperature, and the functional form for the temperature-dependent equilibrium constant for the reaction written as NpO{sub 2}{sup +} + H{sub 2}O {rightleftharpoons} NpO{sub 2}OH + H{sup +} was found to be logK = 2.28 {minus} 3780/T, where T is in {degree}K. Finally, the temperature dependence of neptunium(V) carbonate complexation constants was studied. For the first carbonate complexation constant, the appropriate functional form was found to be log{beta}{sub 01} = 1.47 + 786/T.

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11 p.

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INIS; OSTI as DE96003787

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  • 17. international symposium on lepton-photon interactions, Beijing (China), 10-15 Aug 1995

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  • Other: DE96003787
  • Report No.: SLAC-PUB--95-6972
  • Report No.: CONF-9508155--18
  • Grant Number: AC03-76SF00515;FG02-91ER40676;FG03-92ER40701;FG03-91ER40618;FG03-92ER40689;FG03-93ER40788;FG02-91ER40672;FG02-91ER40677;AC03-76SF00098;FG02-92ER40715;AC02-76ER03069;FG06-85ER40224;FG05-91ER40627;AC02-76ER00881;FG02-92ER40704
  • Office of Scientific & Technical Information Report Number: 207375
  • Archival Resource Key: ark:/67531/metadc668858

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  • August 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Aug. 25, 2016, 2:44 p.m.

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SLD Collaboration. Preliminary measurements of B{sup 0} and B{sup +} lifetimes at SLD, article, August 1, 1995; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc668858/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.