Cesium-134 and iodine-131 in Australia?

This is in response to a post from Enenews user vital1. A rainstorm with radioactive rain occurred in Caloundra, Australia on January 6, 2014.

January 9, 2014 at 6:59 pm Log in to Reply
Took a rain swab off a car here on the 6th January 2013.

This swab was tested using a Theremino Geiger counter kit using a Russian SBT-10 pancake probe. Initial peak was around 5 uSv/hr 3,000 cpm. This is the hottest rain washout detected here so far.



The decay chart of the rain swab showed classic Radon-222 decay daughter decay.



January 10, 2014 at 12:26 am Log in to Reply
Here is the scintillator test chart preliminary assessment, of that rain swab. I used experimental MCA Theremino software for this test. It can get a bit noisy near background. This experimental software is pushing the limits of what can be detected with the equipment here. I have placed peak markers at the top of the chart for reference.

The rain swab Geiger counter and scintillator tests showed that the rain event on the 6th January was mainly Radon-222, and Radon-220 washout.


You can see some of the peaks for Radon-222 and Radon-220 decay daughters still present in the test chart. The main peaks are for Radon-220 daughters at, Pb-212 X-ray (77 kev), Lead Pb-212 (238 keV) and Tl-208 583 keV.

As you can see there is no Cesium present, but traces of Iodine I-129 40 keV?, Lead Pb-210 47keV, U-235 at 185 keV?, and Beryllium Be-7 477 keV. The peak between the Be-7 and 511 peak markers is probably a sum peak of the two.

Any further discussion, or corrections to this assessment are welcome?

Previous rain water tests can be found here.


This rain sample was measured at 5 μSv/hr. This is 50 times the normal background level for this location.

Since he said further discussion was welcome, I took the liberty of looking at this a little further.

He mentioned that radon-222 (and its daughters) were found. This isotope is part of the uranium-238 decay chain. Nuclear fuel at Fukushima is made up mostly of U-238. It is found naturally underground, though, also. That is what uranium miners dig up from the ground. Uranium-235, the ingredient in enriched uranium, which is present in nuclear fuel, and in small quantities naturally, was also mentioned.

But he also found radon-220 (thorium decay series), and also iodine-129. I-129 is being emitted by Fuku, but it is also being dumped by the La Hague plant, and is probably a small contributor to ordinary nuclear power plant emissions.

But there may be a couple definite Fukushima-related isotopes in this spectrum, cesium-134 and iodine-131. My additions to this graphic are in red. To see this, we need to know the energies (in kEv) of these isotopes, as well as the branching ratios of each peak in the spectrum. From Wikipedia:

In particle physics and nuclear physics, the branching fraction for a decay is the fraction of particles which decay by an individual decay mode with respect to the total number of particles which decay. (link)

Which just means the some energy peaks are larger (in probability) than others, because they decay with different probabilities for the different peaks, and we know how much larger the peaks should be by comparing the branching ratios of the peaks.

isotope   energy (kEv)   branching ratio
-------   ------------   ---------------
Cs-134       569.3            15.4
Cs-134       604.7            97.6
Cs-134       795.8            85.4
Cs-134       801.9             8.7
I-131         80.2             2.6
I-131        284.3             6.1
I-131        364.5            81.7
I-131        637.0             7.2

So the peak of Cs-134 at 604.7 is 14% higher than the 795.8 peak. And the peak of I-131 at 364.5 is over 11 times higher than the peak at 637.

The graphic shows that it is plausible that these isotopes are in the rain sample. And if so, they are certainly from Fukushima. But they fall short of the 95% confidence level (or whatever this level might be) that would indicate “scientific proof” that these isotopes are present, according to whatever definition of what this proof is.

But, the opposite of “scientific proof of the existence of A” is NOT “scientific proof of the non-existence of A”. The opposite is “scientific uncertainty of the existence of A.” Something to keep in mind.

41 thoughts on “Cesium-134 and iodine-131 in Australia?

  1. I would encourage people that run gamma spectroscopy analyses to furnish the raw counts for these analyses. It makes things a lot easier for others. If finding a host is an issue, I may be able to host these files on my server.

    • Bobby1 I greatly appreciate your analysis the 6th January rain swab scintillator test, collected here in Australia.

      I would be willing to forward any test results I collect here, for your analysis.

      • Welcome, vital1! I’ve been following you for a long time.

        Thanks… we know more about the radiation situation in Australia, than the situation in America, because of your work.

        • @Bobby1,

          I have conducted a lot of background and Rain water test here. Here is a very brief report for 2013.

          Local Background Levels Report for 2013

          Monitoring station location http://sccc.org.au/monitoring/Australian-Map.jpg

          A large amount of collected recorded data for 2013 has been correlated. The year average background was 22% above the 4 year pre Fukushima average. This is only a very marginal 1% increase over 2012 year 21% increase.

          2013 monthly average chart,


          2012 monthly average chart,


          January 2013 had the highest monthly increase.


          The 2013 year average suggests that at present, the Southern Hemisphere increase at this monitoring location has stabilized.

          Rain Water Tests

          A lot of rain water and car bonnet swabs were conducted during the year. At the beginning of the year, these Geiger counter and scintillator tests manly detected Radon-222 decay daughter isotope washouts, with traces of Beryllium Be-7, Lead Pb-210, Iodine I-129 and Uranium U-235. In July, traces of Thorium Th-234 were detected, plus in September, Radon-220 decay daughter isotopes were also detected for the first time.

          If traces of U-235 were detected, it means a lot more Uranium U-238 is in the atmosphere. The detection of I-129 is also of concern, even if it is in trace amounts.

          More rain water testing results can be found here.


          It is suggested that those who are using tank water should have very good water filters in place, and those on town water use a good reverse osmosis water filter. Also wash your fruit and vegetables well before cooking and eating.

          I suggest this theory

          The scintillator tests here are indicating that the Uranium U-235 being detected is refined. If you look at the tests where the Radon decay daughters have had time to decay away where U-235 is present, there are no larger peaks for Lead Pb-214
          and Bismuth Bi-214, which you would find from soil sourced Uranium.

          These test results suggest there is a lot off Uranium aerosol still in the atmosphere, created by the Fukushima Nuclear disaster or DU. It has been turned into nano particles as some theories suggest.

          Large radon washout events are more frequent here now in the hotter months, when more air flow breaks through the equatorial barrier from the Northern Hemisphere.

          You don’t want to be breathing in or ingesting extra Uranium, or its decay daughters.

          The test here suggest that the greatest single fallout contributor appears to be nano particularized Uranium aerosol, plus the Uranium decay daughters it creates. These very large worldwide Radon washouts events are much more hazardous and significant, than the Nuclear industry would want us to believe.

          Your opinion on this theory would be appreciated.

          • I agree, it is mostly due to uranium daughters, but a lot of thorium series isotopes also shows. These was found in several papers that were about 2011 isotope measurements. A large amount of Tl-208, 100 times normal, was found by the EPA in Alaska. This is a thorium series isotope. I don’t know the significance of this. It could have something to do with natural radioactivity in Fuku soil, or it might have been from the earthquake, or something else.

            Chris Busby found large amounts of lead-210 in an air conditioning filter from Tokyo. This is a uranium-238 decay series product.

            “Page 321: “Based on the validity of isotopic analysis, the 235 U/ 238 U ratio in the environmental samples inside the 3 km range from the Fukushima Daiichi nuclear power plant was analyzed. A possibility of atmospheric release of nuclear fuel matrix during the accident of Fukushima Daiichi nuclear power plant is discussed.”

            That means corium itself was released into the atmosphere.”


            If corium was aersolized (which it obviously was at #3 at least), uranium-238 and U-238 daughters would be found. This is what we’re seeing. But these are naturally occurring radionuclides, too, and so the pro-nukers will always deny it because of this.

            But corium also contains plutonium. This is what we need to look for, but there are almost no measurements of it, even in Japan. A few papers that came out in 2011 mention it. Nothing about protracted plutonium emissions.

          • And you said the 2013 radiation monitoring had stabilized. That means it didn’t go up, but didn’t go down either. The period October 2012 – April 2013 was probably the quietest period around here since 3/11. But it started to get bad again in May. I’m thinking that it’s just getting down in your area around now.

            • Yes, it has stabilized.

              There was a very marginal increase in local background here in 2013, over the significant increase for 2012.

              The pre Fukushima Nuclear Disaster year average level was 0.10 uSv/hr. In 2013 the year average here was 1.22 uSv/hr, and in 2012 was 0.121 uSv/hr.

              • I’m confused, I thought Iodine would have diminished by now because of it’s short life. Or, is it just not dangerous, but still measurable? Are you saying these are fresh Iodine emissions? Thanks. I’m not that knowledgeable with this.

              • Yes, fresh iodine emissions. The half-life of iodine-131 is 8 days, so it is virtually all gone in 80 days. It isn’t necessarily from Fukushima, it is routinely released by nuclear power plants at a low level. Sometimes there are accidents that they don’t tell us about until later, or ever.

                • Quote: “I-131 is also a major fission product of uranium-233, produced from thorium.”

                  “Iodine-131 is also one of the most commonly used gamma-emitting radioactive industrial tracer. Radioactive tracer isotopes are injected with hydraulic fracturing fluid to determine the injection profile and location of fractures created by hydraulic fracturing.”
                  . quoted from: https://en.wikipedia.org/wiki/Iodine-131

                  Quote: “129I is primarily formed from the fission of uranium and plutonium in nuclear reactors. Significant amounts were released into the atmosphere as a result of nuclear weapons testing in the 1950s and 1960s.

                  It is also naturally produced in small quantities, due to the spontaneous fission of natural uranium, by cosmic ray spallation of trace levels of xenon in the atmosphere, and some by cosmic ray muons striking tellurium-130.”
                  . quoted from: https://en.wikipedia.org/wiki/Iodine-129

                  Curious; as our solar output wanes, our cosmic ray levels increase. Combined with increased atmospheric levels of Xenon (an Iodine decay product), could Cosmic Ray Spallation (https://en.wikipedia.org/wiki/Cosmic_ray_spallation) increase radioiodine levels?

                  Wikipedia shows atmospheric Xenon at 0.09 ppmv, yet that was listed as updated from 1998.

                  If am off-course, please excuse my slack-jawed armchair science. 🙂

                  • No wonder “fracking bastards” don’t want ingredients listed. In addition, at least in Candu, er um. canada, you might never see such radiologicals listed in any MSDS sheet. One would need the RSDS sheet for it!

                  • … and even then, some materials might not be listed at all or listed as “proprietary”.

                • I think cosmic rays and solar flares are interacting with Fuku radiation in the upper atmosphere. Causing weird atmospheric phenomena and seismic events.

    • Gosh Don’t the Mine the Uranium that was exported to Japan to be used at Fukushima ? oh Yes they Do. Did I Read that there was a Major Spill of Radioactive Sludge fron a Uranium mine in the Kakadu area last year…Yes I did Hmmm Maybe the Readings is Because of Dust from Australian Uranium mines getting picked up and shifted ,,,oh No it Cant be ..not Australia it Must Be FUKUSHIMA blame those Japanese ….Wake up Aussies Look Closer to home. Check out Silent Storm on youtube interesting Doco about British Nuclear Bomb tests all through the 60’s off Australia on islands and at Maralinga that spread huge amounts of Radiation over Australia many people died from cancers thanks to Britain and Aussie Govt …get Real look at Home don’t blame Japan…blame the mining Companies in Your country.

  2. Hello .
    I have Metastatic Papillary Thyroid Carcinoma.
    I live in Western Australia.
    I was diagnosed approximately one year ago.
    I need to obtain as much data as possible regarding radioactive fall-out in Australia.
    Specifically Radio-Active Iodine.

    • More Australian rain water testing results can be found here. A lots of these tests indicate the presence of radioactive Iodine I-129.


      Disclaimer: This is an amateur volunteer run service. Human error can provide incorrect information, and equipment malfunction can produce false readings. Do not rely on, or take action upon information presented here, without further research.

      • vital1, I have a pituitary tumor and hyperthyroidism. In November 2011, I ate some imported Danish ham. It made my thyroid swell. I stored it in the freezer for 90 days. Then I thawed it and ate some more. My thyroid swelled again, but less so than the first time.

        It wasn’t just iodine-131, there was iodine-129 in the ham. And it was from Denmark.

        • I aim very sorry to hear that you and radioactivepollutiononearth, have these health issues.

          Large numbers of people worldwide will suffer from the consequences of this type of Nuclear pollution.

          A very sad state of affairs not only for human life, but for all the follow creatures we share this wonderful planet with.

          Money and power rule instead of compassion, and concern for our fellow human beings.

    • The map on p. 10 of the pdf, at the top, has a global fallout map for 2011. The interesting thing about it is the increased radioactive deposition in Virginia, West Virginia, Kentucky, Tennessee, and Missouri. I don’t think it reflects the current fallout situation very well, though.

      • Hi Bobby1 and thanks to xdrfox for the link to the CTBTO report.

        I read the CTBTO report and noticed the following things:

        (1) It says there was “…significant deposition of radioactivity over continental North America, in particular, western USA, western Canada, and eastern USA”

        Notice how it says significant radiation was also found in “eastern USA” for anyone who still thinks the radiation is just in California.

        (2) The report also says these levels of rads were estimated to have been released:

        • Cesium 137 = 36.7 PBq
        • Xenon = 15.3 Ebq
        • Iodine 131 = 150 PBq (believe to be underestimated by a factor of five) so range is 190 – 700 PBq

        (3) The report also says, the EPA detected value is “close to the average value for the Chernobyl accident”

        So for anyone still saying Fukushima wasn’t as bad as Chernobyl, you’re wrong.

        And these were just based on the initial radiation releases, not the continuing releases.

  3. I have been watching for the last few days major clouds from north of Darwin being ‘dragged down’ so to speak over to the Exmouth area and then watching it trail its way east across the southern parts of Australia. Has any testing been done in Victoria or South Australia that you know of to see if there are these substances in the air.?

    • Hi, GruntinRunt, I have been looking, they are having cattle deaths in areas, not believed to be of radiation although they have not said so ! See the video and page down below for global weather synopsis !

    • The warm water in the North Pacific has caused a high pressure area to the north and east of it. It’s forcing cold air down the eastern part of North America. And since it won’t budge, it’s backing up waether systems all the way west to the Philippines.

      The warm water is in the same spot as the ocean plume of Fukushima radionuclides.

  4. It has puzzled me this summer that while Australia has been frying and experiencing extreme temperatures and bushfires, New Zealand has escaped all that and has had some of the most equitable weather on the planet.

    Paul Beckwith solved the problem for me (with some of his own humor)

    “The prevailing jets bend downward parallel to the southern Australian coastline away from the high pressure block caused by southern Australian high temperatures. This kind of protects New Zealand from storms and high winds. Rather nice of the Australians. The sea surface temperature is lower on the leeward side of Australia since the Coriolis force pushes surface waters to the left and thus northward between Oz and NZ. This draws cooler waters at lower latitudes up and around NZ keeping temperatures decent.

    Here is his video on the subject, should you not have seen it yet



    • About 13 in He talks about the Gulf Stream not bringing heat up to the north, as he stated the stream stop for a period of time going through the Gulf of Mexico, .. It is still not flowing through it as it used to, so I would think it it not picking up and transferring all the heat that it used to when it flowed the GOM so therefor the waters of the north cool the waters in the Gulf Stream more quickly and further down then in the past ! The scientist said when the gulf stopped that it would change the weather patterns globally and in a few years we would start seeing big changes ! Were they right ??

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