1: Mass asymmetric fission barriers for {sup 98}Mo; 2: Synthesis and characterization of actinide-specific chelating agents

Technical Report · Thu Aug 01 00:00:00 EDT 1996

DOI:https://doi.org/10.2172/414344· OSTI ID:414344

Veeck, A C ^[1]

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1. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry

Excitation functions have been measured for complex fragment emission from the compound nucleus {sup 98}Mo, produced by the reaction of {sup 86}Kr with {sup 12}C. Mass asymmetric fission barriers have been obtained by fitting the excitation functions with a transition state formalism. The extracted barriers are {approximately} 5.7 MeV higher, on average, than the calculations of the Rotating Finite Range Model (RFRM). These data clearly show an isospin dependence of the conditional barriers when compared with the extracted barriers from {sup 90}Mo and {sup 94}Mo. Eleven different liquid/liquid extractants were synthesized based upon the chelating moieties 3,2-HOPO and 3,4-HOPO; additionally, two liquid/liquid extractants based upon the 1,2-HOPO chelating moiety were obtained for extraction studies. The Pu(IV) extractions, quite surprisingly, yielded results that were very different from the Fe(III) extractions. The first trend remained the same: the 1,2-HOPOs were the best extractants, followed closely by the 3,2-HOPOs, followed by the 3,4-HOPOs; but in these Pu(IV) extractions the 3,4-HOPOs performed much better than in the Fe(III) extractions. 129 refs.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); Seaborg (Glenn T.) Inst. for Transactinium Science, Livermore, CA (United States)
• DOE Contract Number: AC03-76SF00098; W-7405-ENG-48
• OSTI ID: 414344
• Report Number(s): LBNL-39513; ON: DE97001683; TRN: 97:001836
• Resource Relation: Other Information: DN: Thesis submitted to Univ. of California, Berkeley, CA (US); TH: Thesis (Ph.D.); PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
40 CHEMISTRY
05 NUCLEAR FUELS
MOLYBDENUM 98
FISSION BARRIER
CHELATING AGENTS
CHEMICAL PREPARATION
KRYPTON 86 REACTIONS
CARBON 12 TARGET
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
PLUTONIUM
SOLVENT EXTRACTION
IRON
RADIOACTIVE WASTE PROCESSING
SEPARATION PROCESSES
LOW-LEVEL RADIOACTIVE WASTES
HIGH-LEVEL RADIOACTIVE WASTES
STORAGE FACILITIES
REMEDIAL ACTION