If so, it had a half life of around 9.7 hours. Xenon-135 had a half life close to that, but had not been detected in Argonne or by the X-10 Graphite Reactor in Oak Ridge, Tennessee. Zinn quickly brought Chicago Pile-3 up to full power, and within twelve hours, had made a series of measurements that confirmed the Hanford results.
If so, it had a half-life around 9.7 hours. Xenon-135 also had a similar half-life but was not detected at Argonne or in Oak Ridge by the X-10 Graphite Reactor. Zinn quickly raised the power of Chicago Pile-3 and within twelve hours, performed measurements that confirmed the results from Hanford.