- #31
Z3r0
Just for our tests yes, when we have a final product for high energy attenuation we'll be sending our product out to 3rd party laboratories for accurate ASTM standards.
Cs-137 Experiment: Effects of Heavy Metal Shielding on Radiation Levels
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Discussion Overview
The discussion revolves around an experiment involving Cs-137 sources and the effects of heavy metal shielding on radiation levels. Participants explore the nuances of radiation measurement, shielding effectiveness, and the calibration of Geiger counters in the context of this experiment.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
- Experimental/applied
Main Points Raised
- One participant describes their experimental setup with Cs-137 sources and a lead pig, noting that radiation levels do not drop significantly even with increased lead shielding.
- Another participant questions the setup and suggests that the count rate may be too low to notice differences between shielding thicknesses.
- Discussion includes the types of radiation emitted by Cs-137 and the necessary lead thickness for effective shielding.
- Participants mention the expected exposure rates based on the source strength and distance, with some expressing skepticism about the high readings observed.
- One participant suggests that backscatter and characteristic x-rays from the lead may contribute to unexpected readings, proposing adjustments to the geometry of the setup.
- Another participant discusses the calibration of their Geiger counter, indicating discrepancies in readings and suggesting that the counter may be out of calibration.
- There are mentions of using aluminum sheets to mitigate backscatter effects, with mixed results reported by participants.
- Calibration procedures and the reliability of the sources used are debated, with concerns raised about the accuracy of the calibration methods employed.
Areas of Agreement / Disagreement
Participants express various viewpoints on the effectiveness of shielding, the accuracy of radiation measurements, and the calibration of detection equipment. No consensus is reached regarding the causes of the high readings or the best methods for improving measurement accuracy.
Contextual Notes
Limitations noted include potential inaccuracies in the calibration of Geiger counters, the influence of backscatter and geometry on readings, and the variability in exposure rates based on source strength and distance.
Who May Find This Useful
This discussion may be of interest to those involved in experimental physics, radiation safety, and radiation detection technology, particularly in the context of Cs-137 and shielding effectiveness.
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