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royalbd
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what do u mean by gamma ray branching ratio of 'k-40' is 10.67%?
K-40 Gamma Ray Branching Ratio: 10.67%
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Discussion Overview
The discussion revolves around the gamma ray branching ratio of potassium-40 (K-40) and its decay modes, specifically focusing on the percentages associated with beta emission, electron capture, and the potential for positron emission. The scope includes theoretical aspects of nuclear decay processes.
Discussion Character
- Technical explanation, Debate/contested
Main Points Raised
- Some participants inquire about the meaning of the gamma ray branching ratio of K-40 being 10.67%.
- One participant states that K-40 has an 89.28% chance of decaying by beta emission and a 10.72% chance of decaying by electron capture.
- Another participant notes that the stated percentages add up to 100% and questions the chance of decaying by positron emission.
- A later reply suggests a probability of 0.001% for positron emission.
Areas of Agreement / Disagreement
Participants express uncertainty regarding the completeness of the decay modes and their associated probabilities, particularly concerning positron emission. No consensus is reached on the interpretation of the branching ratios.
Contextual Notes
There is a lack of clarity on the definitions and assumptions regarding the decay modes of K-40, particularly in relation to the gamma ray branching ratio and the inclusion of positron emission.
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