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[A new correction method for radionuclide formation in neutron activation analysis using a reactor power meter
Radioisotopes
|May 1, 1982
Summary
Accurate neutron flux monitoring is crucial for neutron activation analysis. This study introduces a novel correction method using reactor power fluctuations, significantly reducing errors in radionuclide formation analysis.
Area of Science:
- Nuclear Chemistry
- Analytical Chemistry
Context:
- Neutron activation analysis (NAA) requires precise neutron flux and irradiation time, especially for short-lived nuclides.
- Conventional monitoring methods are often unsatisfactory for these analyses.
- Neutron flux fluctuations are a significant source of error.
Purpose:
- To develop and validate a new correction method for neutron flux fluctuations in NAA.
- To improve the accuracy of radionuclide formation analysis using short-lived nuclides.
- To address the limitations of existing monitoring techniques.
Summary:
- A novel correction method was developed utilizing reactor power fluctuations during pneumatic capsule transport in a TRIGA-II reactor.
- Reactor power changes, proportional to neutron flux, were integrated over irradiation time using a custom-built system (V-F converter, microcomputer).
- This method successfully corrected for neutron flux variations, reducing errors from +/-10% to a few percent in copper and selenium activation analyses.
Impact:
- Enables more accurate radionuclide quantification in NAA, particularly for short-lived isotopes.
- Provides a practical solution for real-time neutron flux monitoring in reactors with power fluctuations.
- Enhances the reliability of NAA results in various applications, including materials science and environmental monitoring.