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n. xenón 133, radioisótopo de xenón usado en la fotoescanción del pulmón.
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The isotopes produced include Molybdenum-99 (Mo-99), Iodine-131 (I-131), Xenon-133 (Xe-133) and Strontium-89 (Sr-89).
The Nuclear Safety and Security Commission said its land-based xenon detector in the northeastern part of the country found traces of xenon-133 isotope on nine occasions, while its mobile equipment off the country's east coast detected traces of the isotope four times.
But the NSSC said it had detected xenon-133, a radioactive isotope that does not occur naturally and which has in the past been linked to North Korea's nuclear tests.
The Korea Institute of Nuclear Safety said the level of xenon-133 isotopes found in the samples was similar to levels normally detected at its two radioactive gas detectors on the eastern and western coasts.
According to the Japan Times, the Comprehensive Test Ban Treaty Organization (CTBTO) said that the ratio of the detected xenon isotopes (xenon-131m and xenon-133) is consistent with a nuclear fission event occurring more than 50 days before the detection.
In an article published in 2012, Lars-Erik De Geer, of the Swedish Defense Research Agency, found that these "observations are consistent with a North Korean low-yield nuclear test on 11 May 2010." (87) De Geer further concluded that the near-absence of another radioactive isotope "could only be explained by a significant [radioactive] xenon-133 contamination of the test site beforehand, e.g., by a test previously carried out in the same chamber"; that the yield of the May test must have been on the order of 50 to 200 tons (0.05 to 0.2 kilotons) given that it was not detected by seismic means; and that a particular signal from radioactive gases "indicated that the [nuclear] charge tested on 11 May 2010 used uranium-235 as the fissile fuel." (88)
Over a seven-hour period, 7,780 curies of iodine-131 and 20,000 curies of xenon-133 were released.
The two are xenon-133 and xenon-135, and as their radioactivity is reduced to about half in about five days and nine hours, respectively, their existence suggests that a nuclear fission took place recently, according to Matsumoto.
amounts of xenon-133 and xenon-135 were found in gas samples from the No.