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North Korea Nuclear Test, North Korean, North South Korea, Reuters, World News
By Fredrik Dahl
VIENNA, April 23 (Reuters) - Radioactive gases that could have come from North Korea's nuclear test in February have unexpectedly been detected, a global monitoring body said on Tuesday, possibly providing the first "smoking gun" evidence of the explosion.
...
"Two radioactive isotopes of the noble gas xenon were identified, xenon-131m and xenon-133, which provide reliable information on the nuclear nature of the source," it said.
"Detection of radioactive noble gas more than seven weeks after an event is indeed unusual. We did not expect this and it did not happen in 2009," the CTBTO added, referring to the reclusive country's previous nuclear test...
While estimates of the explosive power of the latest test vary, most officials and experts assessed it was at least five kilotons - still smaller than the power of the atomic bomb the United States dropped on Hiroshima in World War Two.
North Korea Nuclear Test: Radioactive Traces Possibly Found From February Detonation
By Fredrik Dahl
VIENNA, April 23 (Reuters) - Radioactive gases that could have come from North Korea's nuclear test in February have unexpectedly been detected, a global monitoring body said on Tuesday, possibly providing the first "smoking gun" evidence of the explosion.
...
"Two radioactive isotopes of the noble gas xenon were identified, xenon-131m and xenon-133, which provide reliable information on the nuclear nature of the source," it said.
"Detection of radioactive noble gas more than seven weeks after an event is indeed unusual. We did not expect this and it did not happen in 2009," the CTBTO added, referring to the reclusive country's previous nuclear test...
While estimates of the explosive power of the latest test vary, most officials and experts assessed it was at least five kilotons - still smaller than the power of the atomic bomb the United States dropped on Hiroshima in World War Two.
North Korea Nuclear Test: Radioactive Traces Possibly Found From February Detonation