Neptunium-239 Detected from Soil in Iitate-mura in Fukushima???, EX-SKF, August 15, 2011:
[...] In their blogpost on August 11 (in Japanese), they relate their talk with a researcher at the University of Tokyo who has submitted a scientific paper to a foreign academic society. [...]
[H]e tells the couple that he found neptunium-239 in Iitate-mura, about 38 kilometers from the plant, in approximately the same amount as he found at the front gate of Fukushima I Nuclear Power Plant. That is the topic of his paper.
The couple says in the very intelligent post that they cannot provide details because the paper is in review (but they also say the researcher has given them permission to talk about it in general terms), but it was in several thousand becquerels. There is no mention of whether it was per kilogram or per square meter or per something else. [...]
Neptunium-239, gamma emitter whose half life is about 2.4 days, decays into plutonium-239 whose half life is 24,200 years.
If this Tokyo University researcher went to Iitate-mura after April 20 and he was still detecting neptunium-239 whose half life is only 2.4 days, I just abhor to think of the implications. [...]
Read the report here.
Published: August 15th, 2011 at 6:56 am ET
- Mag: “Large quantity” of Neptunium-239 flew at least 60km from Fukushima meltdowns — Decays into Plutonium-239 September 13, 2011
- Report: 76 trillion becquerels of Plutonium-239 released from Fukushima — 23,000 times higher than previously announced August 29, 2011
- Kyodo: High dosage of cesium similar to Chernobyl evacuation levels found in large city 60 km fom meltdowns — 307,000 Bq/kg in soil on Sept. 14 October 5, 2011
- WaPo: “Many” spots 15 km out have higher radiation than at Fukushima front gate — Risk ‘minimal’, day in no-go zone like 12-hr plane ride November 21, 2011
- One Year Later: Neptunium-239 findings 35km from Fukushima meltdowns published in journal — Decays into Plutonium-239 March 5, 2012