Time Differential Perturbed Angularγγ-Correlation Studies of Diethylenetriaminepentaacetic Acid Complexes with ^{111}In and ^{111m}Cd

• Authors: L. Shpinkova , A. Carbonari , S. Nikitin , J. Mestnik-Filho
• Languages of publication: EN

Abstracts

EN

Static and dynamic electric quadrupole interactions of ^{111}Cd in complexes with diethylenetriaminepentaacetic acid were studied by the time differential perturbed angular γγ-correlation technique using two parent isotopes, ^{111}In(EC)^{111}Cd and ^{111 m}Cd. The measurements were carried out using neutral aqueous solutions of the diethylenetriaminepentaacetic- acid-complexes with initial isotopes at 293 K and 77 K. It was shown that the ^{111}Cd-diethylenetriaminepentaacetic-acid-complex in aqueous solutions at pH = 7.0 is characterised by the re-orientational correlation time of 7.7×10^{-11} s and an electric field gradient V_{zz}=6.7(2)×10^{21} V/m^2 with an asymmetry parameter η=0.75(5). A direct comparison of the electric quadrupole interaction parameters for diethylenetriaminepentaacetic- acid-complexes with ^{111}In and ^{111m}Cd confirmed the proposal about the fragmentation of the complexes caused by the after-effects of electron capture in ^{111}In. An observed difference in the electric quadrupole interaction parameters obtained for the solutions with ^{111}In and ^{111m}Cd complexes reflects a process of a chemical rearrangement of the complex structure after the In decay into Cd

Keywords

EN

23.20.En; 23.40.-s; 61.66.Hq

Discipline

• 23.20.En: Angular distribution and correlation measurements
• 23.40.-s: β decay; double β decay; electron and muon capture
• 61.66.Hq: Organic compounds

• Journal: Acta Physica Polonica A
• Year: 2001
• Volume: 100
• Issue: 5
• Pages: 799-805

Dates

published

2001-11

received

2001-05-14

Contributors

author

L. Shpinkova

• Department of Nuclear Spectroscopy Methods, Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119899, Russian Federation

author

A. Carbonari

• Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, P.O. Box 11049, 05422-970, São Paulo - SP, Brazil

author

S. Nikitin

• Department of Nuclear Spectroscopy Methods, Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119899, Russian Federation

author

J. Mestnik-Filho

• Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, P.O. Box 11049, 05422-970, São Paulo - SP, Brazil

References

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Identifiers

DOI

10.12693/APhysPolA.100.799