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Precise test of internal-conversion theory: transitions measured in five nuclei spanning 50≤Z≤78
Summary
Precise measurements of K-shell internal conversion coefficients (ICCs) for five nuclei support theoretical models. These models accurately predict ICCs when accounting for the atomic vacancy created during internal conversion.
Area of Science:
- Nuclear Physics
- Atomic Physics
Background:
- Internal conversion coefficients (ICCs) are crucial for understanding nuclear transitions.
- Accurate theoretical calculations of ICCs are essential for nuclear structure studies.
Purpose of the Study:
- To precisely measure K-shell internal conversion coefficients (αK) for transitions in five different nuclei.
- To test and validate theoretical models for calculating ICCs.
Main Methods:
- Experimental measurement of αK values for transitions in 197Pt, 193Ir, 137Ba, 134Cs, and 119Sn.
- Comparison of experimental results with theoretical calculations.
Main Results:
- Precise αK values were obtained for the selected nuclei.
- Experimental data strongly favor theoretical calculations that incorporate the atomic vacancy effect.
Conclusions:
- The study validates theoretical models for ICC calculations.
- Accounting for the atomic vacancy in final-state wave functions is critical for accurate ICC predictions.
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