On-line gas chromatographic studies of rutherfordium (Element 104), hahnium (Element 105), and homologs
- Univ. of California, Berkeley, CA (United States)
Gas-phase isothermal chromatogaphy is a method by which volatile compounds of different chemical elements can be separated according to their volatilities. The technique, coupled with theoretical modeling of the processes occurring in the chromatogaphy column, provides accurate determination of thermodynamic properties (e.g., adsorption enthalpies) for compounds of elements, such as the transactinides, which can only be produced on an atom-at-a-time basis. In addition, the chemical selectivity of the isothermal chromatogaphy technique provides the decontamination from interfering activities necessary for the determination of the nuclear decay properties of isotopes of the transactinide elements. Volatility measurements were performed on chloride species of Rf and its group 4 homologs, Zr and Hf, as well as Ha and its group 5 homologs, Nb and Ta. Adsorption enthalpies were calculated for all species using a Monte Carlo code simulation based on a microscopic model for gas thermochromatography in open columns with laminar flow of the carrier gas. Preliminary results are presented for Zr- and Nb-bromides.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 10159643
- Report Number(s):
- LBL-33961; ON: DE93013890; TRN: 93:016194
- Resource Relation:
- Other Information: TH: Thesis (Ph.D.); PBD: May 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ELEMENT 105
GAS CHROMATOGRAPHY
ELEMENT 104
DATA ACQUISITION SYSTEMS
THERMODYNAMIC PROPERTIES
NUCLEAR DECAY
ISOTOPE PRODUCTION
MONTE CARLO METHOD
HEAVY ION REACTIONS
400105
663000
SEPARATION PROCEDURES
NUCLEAR PHYSICS