Dr Chris Busby: radioactivity in apartment in central Tokyo Part 2

Here is Part 2 in which Dr Busby describes measurements made on an airconditing unit filter from inside an apartment in central Tokyo. This was sent by a lady in Tokyo who wanted to know if it was safe to live there. The filter only collected air from inside the apartment. It shows the presence of 130000Bq/kg radioCaesium in the dust plus enriched Uranium and for the first time Lead-210/Polonium-210. The apartment was evacuated from the

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[jack99889988]

There is no reason that Fukushima should have anywhere less cancer causing than chernobyl. Children living in Kiev as well as those liquidators increased their chance of having cancer by over 300%. How can you even claim you calculated it only increase 3~5% cancer from fallout? Also, the study of hot radiation particles' effect is not known because it is both too complex and lack financial support throughout the world.

[jack99889988]

Well that is some bs calculation you claimed sir. Dr.Chris Busby have data from 1986 chernobyl effect caused 11% cancer increase in Sweden. Think about it, lets say distance from Stockholm to Kiev is about 2300km cancer increases by 11% from 1 nuclear plant suffer from nuclear explosion vs. Tokyo to Fukushima is only about 300km and the nuclear plant in Japan unit 3 suffer nuclear explosion, unit 4 leave dry pool outside of environment, 1 steam explosion. 3-5% is a joke. it should be 30-50%.

[joelb79]

Bi-214 would not be present in any air filter sample after 7 days. I do not agree with your po-210 assessment as one would expect to see no Bi-214 after 7 days of decay.

[musick2138]

"sample contains..." [a (link to a) file with these data would be *really*nice-2-have*; 4 my archive:] all activities in kBq/kg...

Cs-134 ... 42

Cs-137 ... 68

Pb-210 ... 7.5 (but no Bi-214)

U-238 ... 3

U-235 ... 0.24 "

(iaanm,) Act(U238/U235)= 12.5 => 1.2% U235 ... certainly no natural U

[drdrwoland]

There are 2 devices. The PC screen shows gamma ray spectrum from a liquid nitrogen cooled HPGe detector with a multichannel analyser. The other thing in Part 1 was the Elektra / DP2 probe thing which does the betas, gammas and alphas; that one doesnt do the energy spectrum.

[liutasx]

Does this device detect only gamma rays or also and beta "rays"?

How you are distinguishing between different isotopes, which emits gamma rays (by energy)?

[cbu5by]

Pu is an alpha emitter, no gamma. Pu-239 decays to U-235 which has weak gamma. There is plenty of U-235 in the sample and also its daughter Th231also weak gamma. So that could be from Plutonium or it could be directly from the fallout. Impossible to distinguish.

Chris

[liutasx]

Why this technique don't detect plutonium in the sample?

We know plutonium decay products, why we don't these products in the sample?

That is difference detecting uranium 235 or 238 and plutonium 239 and other isotopes?

[cbu5by]

I have calculated on the basis of the average contamination levels for Tokyo that there will be about 3-5% increase in cancer due to the fallout from Fukushima. But there is not a lot of data on the fallout