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Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
Published on: July 21, 2011
Evaluation the decay data of (153)Gd
1China Institute of Atomic Energy, P.O. Box 275(41), Beijing 102413, China.
Summary
This study presents an updated decay scheme for Gadolinium-153 (Gd) using electron capture. Key findings include a refined half-life of 239.47 days and a recommended gamma-ray emission probability for improved nuclear data.
Area of Science:
- Nuclear Physics
- Radiochemistry
- Atomic and Molecular Physics
Background:
- Gadolinium-153 (Gd) undergoes electron capture decay, populating excited states in Europium-153 (Eu).
- Accurate decay data is crucial for various applications, including medical imaging and nuclear structure studies.
- Previous evaluations of (153)Gd decay data may not incorporate the latest experimental measurements.
Purpose of the Study:
- To provide a comprehensive and updated evaluation of the (153)Gd decay scheme.
- To incorporate recent experimental measurements into the decay data analysis.
- To establish precise values for the half-life and gamma-ray emission probabilities of (153)Gd.
Main Methods:
- Application of the Limitation of Relative Statistical Weight (LRSW) method for averaging experimental data.
- Rigorous examination of all known measured gamma-ray relative emission probabilities.
- Calculation of internal conversion coefficients and decay intensity balance using the ENSDF analysis program.
Main Results:
- The half-life of (153)Gd is determined to be 239.47 ± 0.07 days.
- The gamma-ray emission probability for the 97.431 keV reference line is recommended as 29.5 ± 0.5%.
- A complete decay intensity balance was achieved, and the (153)Gd decay scheme was re-built based on the evaluated data.
Conclusions:
- The updated decay scheme and data for (153)Gd provide a more accurate representation of its radioactive decay.
- The refined nuclear data, particularly the half-life and gamma-ray probabilities, enhance the reliability of applications utilizing (153)Gd.
- This work establishes a robust foundation for future nuclear structure investigations involving (153)Gd and its daughter nucleus (153)Eu.
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