Neutron beam observed 13 times at crippled Fukushima nuke plant, Kyodo, March 23, 2011:
Tokyo Electric Power Co. said Wednesday it has observed a neutron beam, a kind of radioactive ray, 13 times on the premises of the Fukushima Daiichi nuclear plant…
TEPCO, the operator of the nuclear plant, said the neutron beam measured about 1.5 kilometers southwest of the plant’s No. 1 and 2 reactors over three days from March 13 and is equivalent to 0.01 to 0.02 microsieverts per hour and that this is not a dangerous level.
The utility firm said it will measure uranium and plutonium, which could emit a neutron beam, as well. …
[T]he measured neutron beam may be evidence that uranium and plutonium leaked from the plant’s nuclear reactors and spent nuclear fuels have discharged a small amount of neutron beams through nuclear fission.
Rad the report here.
Published: March 23rd, 2011 at 11:49 am ET
- UPDATE: Neutron beams suggest uranium and plutonium have leaked and nuclear fission has occurred March 23, 2011
- Report on neutron beams — Has a reactor at Fukushima gone “critical”? March 30, 2011
- Experts: Nuclear chain reactions may have lasted over 7 months at Fukushima — Neutron leakage from ‘active’ molten fuel — “Core producing radioactive sulfur” — Top Gov’t Official: MOX fuel could be neutron source April 10, 2014
- L.A. Times: Speculation that “supercritical fission event” occurred at Fukushima reactor irradiating plutonium, says nuclear expert — Explosion so massive investigators found fuel rod fragments a mile away March 9, 2012
- Neutron ray measured in Tokyo — Uranium-235 found in Chiba — Can’t be detected by most geiger counters (PHOTO & VIDEO) October 19, 2011