Nov. 1 — “Xenon was detected in the order of 10^-5 (ten to the power of minus 5) per cubic centimeter, says TEPCO’s Matsumoto in the press conference that is on-going right now in Japan,” reports EX-SKF, “It is significant enough to conclude it is not from March.”
“Matsumoto does think a localized, small-scale, and/or temporary nuclear fission may have occurred in Reactor 2,” the article continues.
Some possibilities put forth by TEPCO to explain the detection of xenon-133 and -135 include:
- “Neutrons that exist inside the reactor hitting uranium or plutonium”
- “Curium-244, -242, causing ‘spontaneous fission’”
The TEPCO spokesman said, “It would be difficult to deny that the same thing is not happening in Reactors 1 and 3,” according to EX-SKF.
Published: November 1st, 2011 at 11:09 pm ET
- NHK: Curium-242 and -244 to blame for ‘spontaneous’ nuclear fission at Reactor No. 2, not uranium -Tepco November 3, 2011
- Kyoto Nuke Expert: This amount of xenon would not be detected unless melted fuel had “fission chain reaction” — Xe-133, -135 usually not present, even during operation of reactors November 2, 2011
- Japan Times: It is now a “grave situation” at Fukushima — “Plutonium fission” mentioned for first time — “Criticality is very likely to have occurred” November 3, 2011
- TEPCO: If nuclear chain reaction is happening, it is ‘small-scale’ — NHK: Xenon created when there is nuclear fission of uranium-235 November 1, 2011
- FOX: Radiation may have been released from Reactor No. 2 — TEPCO scheduled for 10pm EST press conference November 1, 2011