1: Mass asymmetric fission barriers for {sup 98}Mo; 2: Synthesis and characterization of actinide-specific chelating agents
Abstract
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.
- Authors:
-
- Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Research, Washington, DC (United States); Seaborg (Glenn T.) Inst. for Transactinium Science, Livermore, CA (United States)
- OSTI Identifier:
- 414344
- Report Number(s):
- LBNL-39513
ON: DE97001683; TRN: 97:001836
- DOE Contract Number:
- AC03-76SF00098; W-7405-ENG-48
- Resource Type:
- Technical Report
- 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
- Subject:
- 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
Citation Formats
Veeck, A C, Lawrence Livermore National Lab., CA, and Lawrence Berkeley National Lab., CA. 1: Mass asymmetric fission barriers for {sup 98}Mo; 2: Synthesis and characterization of actinide-specific chelating agents. United States: N. p., 1996.
Web. doi:10.2172/414344.
Veeck, A C, Lawrence Livermore National Lab., CA, & Lawrence Berkeley National Lab., CA. 1: Mass asymmetric fission barriers for {sup 98}Mo; 2: Synthesis and characterization of actinide-specific chelating agents. United States. https://doi.org/10.2172/414344
Veeck, A C, Lawrence Livermore National Lab., CA, and Lawrence Berkeley National Lab., CA. 1996.
"1: Mass asymmetric fission barriers for {sup 98}Mo; 2: Synthesis and characterization of actinide-specific chelating agents". United States. https://doi.org/10.2172/414344. https://www.osti.gov/servlets/purl/414344.
@article{osti_414344,
title = {1: Mass asymmetric fission barriers for {sup 98}Mo; 2: Synthesis and characterization of actinide-specific chelating agents},
author = {Veeck, A C and Lawrence Livermore National Lab., CA and Lawrence Berkeley National Lab., CA},
abstractNote = {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.},
doi = {10.2172/414344},
url = {https://www.osti.gov/biblio/414344},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1996},
month = {Thu Aug 01 00:00:00 EDT 1996}
}