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Veterans Today - Your Radiation Week
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Joined: Fri Jan 31, 2014 5:28 pm Posts: 42 
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Pictures for previous post.
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| Sun Nov 22, 2015 9:43 am |
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Moderator  Joined: Mon Jan 28, 2013 7:40 pm Posts: 2891 Location: Illinois
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I found this posted on the West Lake Landfill Facebook page. The guy said he got this information in an email from the EPA when he questioned them about what each channel was detecting.
Range 2: Ba-140 Range 3: I-131 Range 4: Kr-85 Range 5: Cs-137, Ba-137m & Cs-134 Range 6: Ru-106 Range 7: Y-91 Range 8: K-40 Range 9: Na-24, Mn-56 Range 10: Sr-90 _________________ MY OUTSIDE RADIATION MONITORING STATION: South Beloit, Illinois - GMC200 Outside on HEPA air purifier, ground level, facing West. http://netc.com/chart/view.php?n=1%3AEB5A139C |
| Sun Nov 22, 2015 12:53 pm |
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Site Admin  Joined: Mon Jan 28, 2013 6:51 pm Posts: 743 Location: Arkansas
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Thanks for the information, netc
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| Sun Nov 22, 2015 2:03 pm |
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Joined: Fri Jul 03, 2015 7:04 pm Posts: 165 Location: Toronto Canada
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I believe it's ranges 3 and 5 that are the ones to watch the most. But translating a gamma range graph (which is a coarse spectrum) into an isotope is not so straight-forward. Some isotopes listed in the West Lake posting have several energy ranges, with only the primary range shown here. For example, if range 3 and 5 both show a spike, it does not necessarily mean both I-131 and Cs-137 are present, as each of these can show a spike in both ranges. See http://nukeprofessional.blogspot.ca/2013/11/cpm-of-gamma-in-energy-range-600-800kev.html, where the EPA energy ranges are described along with some isotopes that emit in these ranges.
_________________ https://netc.com/chart/view.php?n=1%3A919A925A.5 Toronto, Ontario, Canada SBM-20 indoors |
| Tue Nov 24, 2015 9:30 pm |
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