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Updated: Aug 9, 2026
10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Decay Data Evaluation Project (DDEP): evaluation of the main 233Pa decay characteristics
Valery P Chechev1, Nikolay K Kuzmenko
1V.G. Khlopin Radium Institute, 28 Second Murinsky Ave., St. Petersburg, 194021, Russia. chechev@atom.nw.ru
Summary
This study presents evaluated decay data for protactinium-233 (233Pa) beta-minus decay to uranium-233 (233U) nuclear levels. Data were compiled from published information up to 2005 for the Decay Data Evaluation Project.
Area of Science:
- Nuclear Physics
- Radiochemistry
- Atomic and Molecular Physics
Background:
- Accurate nuclear decay data are crucial for various applications, including nuclear reactor technology and medical isotope production.
- Protactinium-233 (233Pa) is a key intermediate in the thorium fuel cycle, necessitating precise decay characteristics.
- Previous evaluations may not have incorporated the latest experimental findings or theoretical calculations.
Purpose of the Study:
- To provide a comprehensive and up-to-date evaluation of decay data for 233Pa beta-minus decay.
- To establish reliable nuclear level schemes and transition properties for 233U populated by 233Pa decay.
- To serve as a benchmark dataset for nuclear structure models and applications.
Main Methods:
- Systematic collection and critical assessment of all relevant experimental decay data for 233Pa.
- Utilizing nuclear decay data evaluation techniques and software tools.
- Comparison with theoretical predictions and other available datasets.
Main Results:
- An evaluated set of decay properties, including energies and intensities of beta transitions and associated gamma rays.
- A refined nuclear level scheme for 233U, incorporating new or revised assignments.
- Uncertainty analysis for the evaluated data.
Conclusions:
- The presented evaluated decay data offer an improved foundation for nuclear applications involving 233Pa and 233U.
- This work highlights areas where further experimental or theoretical investigation may be beneficial.
- The data are essential for accurate modeling in nuclear energy and research.
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